Publications of Pertti Makela ordered by citations

A list of publications authored or co-authored by Pertti Makela, derived from the SAO/NASA Astrophysics Data System (ADS) and ordered by the numbers of citations. Publications above the horizontal line count towards the h-index.

Orcid ID: 0000-0002-8182-4559

266	Properties of Ground Level Enhancement Events and the Associated Solar Eruptions During Solar Cycle 23 Gopalswamy, N., Xie, H., Yashiro, S., Akiyama, S., Mäkelä, P. & Usoskin, I. G., 2012, Space Science Reviews, 171, 23
164	CME interactions with coronal holes and their interplanetary consequences Gopalswamy, N., Mäkelä, P., Xie, H., Akiyama, S. & Yashiro, S., 2009, Journal of Geophysical Research (Space Physics), 114, A00A22
156	Relation Between Type II Bursts and CMEs Inferred from STEREO Observations Gopalswamy, N., Thompson, W. T., Davila, J. M., Kaiser, M. L., Yashiro, S., Mäkelä, P., Michalek, G., Bougeret, J. -L. & Howard, R. A., 2009, Solar Physics, 259, 227
132	The Energetic Particle Detector. Energetic particle instrument suite for the Solar Orbiter mission Rodríguez-Pacheco, J., Wimmer-Schweingruber, R. F., Mason, G. M., Ho, G. C., Sánchez-Prieto, S., Prieto, M., Martín, C., Seifert, H., Andrews, G. B., Kulkarni, S. R., Panitzsch, L., Boden, S., Böttcher, S. I., Cernuda, I., Elftmann, R., Espinosa Lara, F., Gómez-Herrero, R., Terasa, C., Almena, J., Begley, S., Böhm, E., Blanco, J. J., Boogaerts, W., Carrasco, A., Castillo, R., da Silva Fariña, A., de Manuel González, V., Drews, C., Dupont, A. R., Eldrum, S., Gordillo, C., Gutiérrez, O., Haggerty, D. K., Hayes, J. R., Heber, B., Hill, M. E., Jüngling, M., Kerem, S., Knierim, V., Köhler, J., Kolbe, S., Kulemzin, A., Lario, D., Lees, W. J., Liang, S., Martínez Hellín, A., Meziat, D., Montalvo, A., Nelson, K. S., Parra, P., Paspirgilis, R., Ravanbakhsh, A., Richards, M., Rodríguez-Polo, O., Russu, A., Sánchez, I., Schlemm, C. E., Schuster, B., Seimetz, L., Steinhagen, J., Tammen, J., Tyagi, K., Varela, T., Yedla, M., Yu, J., Agueda, N., Aran, A., Horbury, T. S., Klecker, B., Klein, K. -L., Kontar, E., Krucker, S., Maksimovic, M., Malandraki, O., Owen, C. J., Pacheco, D., Sanahuja, B., Vainio, R., Connell, J. J., Dalla, S., Dröge, W., Gevin, O., Gopalswamy, N., Kartavykh, Y. Y., Kudela, K., Limousin, O., Makela, P., Mann, G., Önel, H., Posner, A., Ryan, J. M., Soucek, J., Hofmeister, S., Vilmer, N., Walsh, A. P., Wang, L., Wiedenbeck, M. E., Wirth, K. & Zong, Q., 2020, A&A, 642, A7
130	Anomalous expansion of coronal mass ejections during solar cycle 24 and its space weather implications Gopalswamy, Nat, Akiyama, Sachiko, Yashiro, Seiji, Xie, Hong, Mäkelä, Pertti & Michalek, Grzegorz, 2014, Geophysical Research Letters, 41, 2673
117	Coronal mass ejections, type II radio bursts, and solar energetic particle events in the SOHO era Gopalswamy, N., Yashiro, S., Akiyama, S., Mäkelä, P., Xie, H., Kaiser, M. L., Howard, R. A. & Bougeret, J. L., 2008, Annales Geophysicae, 26, 3033
109	Properties and geoeffectiveness of magnetic clouds during solar cycles 23 and 24 Gopalswamy, N., Yashiro, S., Xie, H., Akiyama, S. & Mäkelä, P., 2015, Journal of Geophysical Research (Space Physics), 120, 9221
106	Major solar eruptions and high-energy particle events during solar cycle 24 Gopalswamy, Nat, Xie, Hong, Akiyama, Sachiko, Mäkelä, Pertti A. & Yashiro, Seiji, 2014, Earth, Planets and Space, 66, 104
102	Interplanetary Shocks Lacking Type II Radio Bursts Gopalswamy, N., Xie, H., Mäkelä, P., Akiyama, S., Yashiro, S., Kaiser, M. L., Howard, R. A. & Bougeret, J. -L., 2010, ApJ, 710, 1111
100	Coronal Magnetic Field Measurement from EUV Images Made by the Solar Dynamics Observatory Gopalswamy, Nat, Nitta, Nariaki, Akiyama, Sachiko, Mäkelä, Pertti & Yashiro, Seiji, 2012, ApJ, 744, 72
90	Height of shock formation in the solar corona inferred from observations of type II radio bursts and coronal mass ejections Gopalswamy, N., Xie, H., Mäkelä, P., Yashiro, S., Akiyama, S., Uddin, W., Srivastava, A. K., Joshi, N. C., Chandra, R., Manoharan, P. K., Mahalakshmi, K., Dwivedi, V. C., Jain, R., Awasthi, A. K., Nitta, N. V., Aschwanden, M. J. & Choudhary, D. P., 2013, Advances in Space Research, 51, 1981
77	The Peculiar Behavior of Halo Coronal Mass Ejections in Solar Cycle 24 Gopalswamy, N., Xie, H., Akiyama, S., Mäkelä, P., Yashiro, S. & Michalek, G., 2015, ApJ, 804, L23
77	Extreme Kinematics of the 2017 September 10 Solar Eruption and the Spectral Characteristics of the Associated Energetic Particles Gopalswamy, N., Yashiro, S., Mäkelä, P., Xie, H., Akiyama, S. & Monstein, C., 2018, ApJ, 863, L39
73	Large Solar Energetic Particle Events Associated with Filament Eruptions Outside of Active Regions Gopalswamy, N., Mäkelä, P., Akiyama, S., Yashiro, S., Xie, H., Thakur, N. & Kahler, S. W., 2015, ApJ, 806, 8
66	Behavior of Solar Cycles 23 and 24 Revealed by Microwave Observations Gopalswamy, N., Yashiro, S., Mäkelä, P., Michalek, G., Shibasaki, K. & Hathaway, D. H., 2012, ApJ, 750, L42
62	Ground Level Enhancement in the 2014 January 6 Solar Energetic Particle Event Thakur, N., Gopalswamy, N., Xie, H., Mäkelä, P., Yashiro, S., Akiyama, S. & Davila, J. M., 2014, ApJ, 790, L13
57	The 2012 July 23 Backside Eruption: An Extreme Energetic Particle Event? Gopalswamy, N., Yashiro, S., Thakur, N., Mäkelä, P., Xie, H. & Akiyama, S., 2016, ApJ, 833, 216
56	Coronal Hole Influence on the Observed Structure of Interplanetary CMEs Mäkelä, P., Gopalswamy, N., Xie, H., Mohamed, A. A., Akiyama, S. & Yashiro, S., 2013, Solar Physics, 284, 59
53	A Catalog of Type II radio bursts observed by Wind/WAVES and their Statistical Properties Gopalswamy, N., Mäkelä, P. & Yashiro, S., 2019, Sun and Geosphere, 14, 111
52	Testing the empirical shock arrival model using quadrature observations Gopalswamy, N., Mäkelä, P., Xie, H. & Yashiro, S., 2013, Space Weather, 11, 661
49	The Solar Connection of Enhanced Heavy Ion Charge States in the Interplanetary Medium: Implications for the Flux-Rope Structure of CMEs Gopalswamy, N., Mäkelä, P., Akiyama, S., Xie, H., Yashiro, S. & Reinard, A. A., 2013, Solar Physics, 284, 17
44	The Solar Energetic Particle Event of 2010 August 14: Connectivity with the Solar Source Inferred from Multiple Spacecraft Observations and Modeling Lario, D., Kwon, R. -Y., Richardson, I. G., Raouafi, N. E., Thompson, B. J., von Rosenvinge, T. T., Mays, M. L., Mäkelä, P. A., Xie, H., Bain, H. M., Zhang, M., Zhao, L., Cane, H. V., Papaioannou, A., Thakur, N. & Riley, P., 2017, ApJ, 838, 51
42	Energetic (∼ 1 to 50 MeV) protons associated with Earth-directed coronal mass ejections Torsti, J., Anttila, A., Kocharov, L., Mäkelä, P., Riihonen, E., Sahla, T., Teittinen, M., Valtonen, E., Laitinen, T. & Vainio, R., 1998, Geophysical Research Letters, 25, 2525
42	A multiwavelength study of eruptive events on January 23, 2012 associated with a major solar energetic particle event Joshi, N. C., Uddin, W., Srivastava, A. K., Chandra, R., Gopalswamy, N., Manoharan, P. K., Aschwanden, M. J., Choudhary, D. P., Jain, R., Nitta, N. V., Xie, H., Yashiro, S., Akiyama, S., Mäkelä, P., Kayshap, P., Awasthi, A. K., Dwivedi, V. C. & Mahalakshmi, K., 2013, Advances in Space Research, 52, 1
36	Energetic storm particle events in coronal mass ejection-driven shocks Mäkelä, P., Gopalswamy, N., Akiyama, S., Xie, H. & Yashiro, S., 2011, Journal of Geophysical Research (Space Physics), 116, A08101
36	The relation between coronal holes and coronal mass ejections during the rise, maximum, and declining phases of Solar Cycle 23 Mohamed, A. A., Gopalswamy, N., Yashiro, S., Akiyama, S., Mäkelä, P., Xie, H. & Jung, H., 2012, Journal of Geophysical Research (Space Physics), 117, A01103
35	Interplanetary Type II Radio Bursts from Wind/WAVES and Sustained Gamma-Ray Emission from Fermi/LAT: Evidence for Shock Source Gopalswamy, Nat, Mäkelä, Pertti, Yashiro, Seiji, Lara, Alejandro, Xie, Hong, Akiyama, Sachiko & MacDowall, Robert J., 2018, ApJ, 868, L19
34	Long-term solar activity studies using microwave imaging observations and prediction for cycle 25 Gopalswamy, N., Mäkelä, P., Yashiro, S. & Akiyama, S., 2018, Journal of Atmospheric and Solar-Terrestrial Physics, 176, 26
29	Estimating the Height of CMEs Associated with a Major SEP Event at the Onset of the Metric Type II Radio Burst during Solar Cycles 23 and 24 Mäkelä, P., Gopalswamy, N., Akiyama, S., Xie, H. & Yashiro, S., 2015, ApJ, 806, 13
25	Solar Sources of ``Driverless'' Interplanetary Shocks Gopalswamy, N., Mäkelä, P., Xie, H., Akiyama, S. & Yashiro, S., 2010, Twelfth International Solar Wind Conference (Editors: Maksimovic, M., Issautier, K., Meyer-Vernet, N., Moncuquet, M. & Pantellini, F.), American Institute of Physics Conference Series, 1216, p. 452
25	Solar energetic particle events during the rise phases of solar cycles 23 and 24 Chandra, R., Gopalswamy, N., Mäkelä, P., Xie, H., Yashiro, S., Akiyama, S., Uddin, W., Srivastava, A. K., Joshi, N. C., Jain, R., Awasthi, A. K., Manoharan, P. K., Mahalakshmi, K., Dwivedi, V. C., Choudhary, D. P. & Nitta, N. V., 2013, Advances in Space Research, 52, 2102
24	Energetic (~10-65 MeV) protons observed by ERNE on August 13-14, 1996: Eruption on the solar back side as a possible source of the event Torsti, J., Kocharov, L., Teittinen, M., Anttila, A., Laitinen, T., Mäkelä, P., Riihonen, E., Vainio, R. & Valtonen, E., 1999, Journal of Geophysical Research, 104, 9903
24	Statistical Study on Multispacecraft Widespread Solar Energetic Particle Events During Solar Cycle 24 Xie, H., St. Cyr, O. C., Mäkelä, P. & Gopalswamy, N., 2019, Journal of Geophysical Research (Space Physics), 124, 6384
23	Post-Eruption Arcades and Interplanetary Coronal Mass Ejections Yashiro, S., Gopalswamy, N., Mäkelä, P. & Akiyama, S., 2013, Solar Physics, 284, 5
22	A Sun-to-Earth Analysis of Magnetic Helicity of the 2013 March 17-18 Interplanetary Coronal Mass Ejection Pal, Sanchita, Gopalswamy, Nat, Nandy, Dibyendu, Akiyama, Sachiko, Yashiro, Seiji, Makela, Pertti & Xie, Hong, 2017, ApJ, 851, 123
22	On the reduced geoeffectiveness of solar cycle 24: A moderate storm perspective Selvakumaran, R., Veenadhari, B., Akiyama, S., Pandya, Megha, Gopalswamy, N., Yashiro, S., Kumar, Sandeep, Mäkelä, P. & Xie, H., 2016, Journal of Geophysical Research (Space Physics), 121, 8188
21	A Hierarchical Relationship between the Fluence Spectra and CME Kinematics in Large Solar Energetic Particle Events: A Radio Perspective Gopalswamy, N., Mäkelä, P., Yashiro, S., Thakur, N., Akiyama, S. & Xie, H., 2017, Journal of Physics Conference Series, Journal of Physics Conference Series, 900, p. 012009
21	Long-duration Low-frequency Type III Bursts and Solar Energetic Particle Events Gopalswamy, Nat & Mäkelä, Pertti, 2010, ApJ, 721, L62
20	High-energy solar particle events in cycle 24 Gopalswamy, N., Mäkelä, P., Yashiro, S., Xie, H., Akiyama, S. & Thakur, N., 2015, Journal of Physics Conference Series, Journal of Physics Conference Series, 642, p. 012012
20	Two Exceptions in the Large SEP Events of Solar Cycles 23 and 24 Thakur, N., Gopalswamy, N., Mäkelä, P., Akiyama, S., Yashiro, S. & Xie, H., 2016, Solar Physics, 291, 513
19	The radial speed-expansion speed relation for Earth-directed CMEs Mäkelä, P., Gopalswamy, N. & Yashiro, S., 2016, Space Weather, 14, 368
15	What Is Unusual About the Third Largest Geomagnetic Storm of Solar Cycle 24? Gopalswamy, N., Yashiro, S., Akiyama, S., Xie, H., Mäkelä, P., Fok, M. -C. & Ferradas, C. P., 2022, Journal of Geophysical Research (Space Physics), 127, e30404
15	Source Regions of the Type II Radio Burst Observed During a CME-CME Interaction on 2013 May 22 Mäkelä, P., Gopalswamy, N., Reiner, M. J., Akiyama, S. & Krupar, V., 2016, ApJ, 827, 141
15	Source of Energetic Protons in the 2014 September 1 Sustained Gamma-ray Emission Event Gopalswamy, N., Mäkelä, P., Yashiro, S., Akiyama, S., Xie, H. & Thakur, N., 2020, Solar Physics, 295, 18
15	Energy dependence of SEP electron and proton onset times Xie, H., Mäkelä, P., Gopalswamy, N. & St. Cyr, O. C., 2016, Journal of Geophysical Research (Space Physics), 121, 6168
14	Properties of High-Frequency Type II Radio Bursts and Their Relation to the Associated Coronal Mass Ejections Umuhire, A. C., Gopalswamy, N., Uwamahoro, J., Akiyama, S., Yashiro, S. & Mäkelä, P., 2021, Solar Physics, 296, 27
14	Direction-finding Analysis of the 2012 July 6 Type II Solar Radio Burst at Low Frequencies Mäkelä, Pertti, Gopalswamy, Nat & Akiyama, Sachiko, 2018, ApJ, 867, 40
13	Comparison of the coronal mass ejection shock acceleration of three widespread SEP events during solar cycle 24 Xie, H., Mäkelä, P., St. Cyr, O. C. & Gopalswamy, N., 2017, Journal of Geophysical Research (Space Physics), 122, 7021
13	On the Shock Source of Sustained Gamma-Ray Emission from the Sun Gopalswamy, N., Mäkelä, P., Yashiro, S., Lara, A., Akiyama, S. & Xie, H., 2019, Journal of Physics Conference Series, Journal of Physics Conference Series, 1332, p. 012004
12	The Balloon-Borne Investigation of Temperature and Speed of Electrons in the Corona (BITSE): Mission Description and Preliminary Results Gopalswamy, N., Newmark, J., Yashiro, S., Mäkelä, P., Reginald, N., Thakur, N., Gong, Q., Kim, Y. -H., Cho, K. -S., Choi, S. -H., Baek, J. -H., Bong, S. -C., Yang, H. -S., Park, J. -Y., Kim, J. -H., Park, Y. -D., Lee, J. -O., Kim, R. -S. & Lim, E. -K., 2021, Solar Physics, 296, 15
12	Effect of the Weakened Heliosphere in Solar Cycle 24 on the Properties of Coronal Mass Ejections Gopalswamy, N., Akiyama, S., Yashiro, S., Michalek, G., Xie, H. & Mäkelä, P., 2020, Journal of Physics Conference Series, Journal of Physics Conference Series, 1620, p. 012005
11	A Study of Coronal Holes Observed by SoHO/EIT and the Nobeyama Radioheliograph Akiyama, Sachiko, Gopalswamy, Nat, Yashiro, Seiji & Mäkelä, Pertti, 2013, Publications of the Astronomical Society of Japan, 65, S15
8	Solar activity and space weather Gopalswamy, Nat, Mäkelä, Pertti, Yashiro, Seiji, Akiyama, Sachiko & Xie, Hong, 2022, Journal of Physics Conference Series, Journal of Physics Conference Series, 2214, p. 012021
8	Homologous flare-CME events and their metric type II radio burst association Yashiro, S., Gopalswamy, N., Mäkelä, P., Akiyama, S., Uddin, W., Srivastava, A. K., Joshi, N. C., Chandra, R., Manoharan, P. K., Mahalakshmi, K., Dwivedi, V. C., Jain, R., Awasthi, A. K., Nitta, N. V., Aschwanden, M. J. & Choudhary, D. P., 2014, Advances in Space Research, 54, 1941
8	Interacting and Interplanetary Protons Accelerated on Diverging Magnetic Field Lines: Stochastic Acceleration Kocharov, L., Kovaltsov, G. A., Laitinen, T., Mäkelä, P. & Torsti, J., 1999, ApJ, 521, 898
7	SOHO/Energetic and Relativistic Nucleon and Electron Experiment Measurements of Energetic H, He, O, and Fe Fluxes during the 1997 November 6 Solar Event Torsti, J., Mäkelä, P., Teittinen, M. & Laivola, J., 2000, ApJ, 544, 1169
7	The Common Origin of High-energy Protons in Solar Energetic Particle Events and Sustained Gamma-Ray Emission from the Sun Gopalswamy, N., Yashiro, S., Mäkelä, P., Xie, H. & Akiyama, S., 2021, ApJ, 915, 82
6	What Do Halo CMEs Tell Us about Solar Cycle 25? Gopalswamy, Nat, Michalek, Grzegorz, Yashiro, Seiji, Mäkelä, Pertti, Akiyama, Sachiko & Xie, Hong, 2023, ApJ, 952, L13
6	Fermi, Wind, and SOHO Observations of Sustained Gamma-Ray Emission from the Sun Gopalswamy, N., Makela, P., Yashiro, S., Lara, A., Xie, H., Akiyama, S. & MacDowall, R. J., 2018, arXiv:1810.08958
4	Anomalous Cosmic-Ray Helium, Nitrogen and Oxygen in 1996 - Measurements of the ERNE Instrument on-board SOHO Torsti, J., Valtonen, E., Anttila, A., Vainio, R., Mäkelä, P., Riihonen, E. & Teittinen, M., 1997, Solar Physics, 170, 193
3	ERNE observations of energetic particle fluxes Torsti, J., Valtonen, E., Riihonen, E., Teittinen, M., Anttila, A., Vainio, R., Mäkelä, P., Eronen, T., Laitinen, T. & Schultz, G., 1997, Advances in Space Research, 20, 91
3	Great Storm Particle Event on 2000 August 11 Observed by SOHO ERNE Torsti, J., Mäkelä, P., Riihonen, E. & Saloniemi, O., 2006, ApJ, 638, 530
2	Observations of galactic cosmic ray modulation during Earth-directed coronal mass ejections Mäkelä, P., Torsti, J., Teittinen, M., Valtonen, E., Riihonen, E. & Ipavich, F., 1998, Geophysical Research Letters, 25, 2951
1	On the Properties of Solar Energetic Particle Events Associated with Metric Type II Radio Bursts Mäkelä, P., Gopalswamy, N., Xie, H., Akiyama, S., Yashiro, S. & Thakur, N., 2019, Sun and Geosphere, 14, 123
1	Particle Acceleration and Transport at the Sun Inferred from Fermi/LAT Observations of >100 MeV Gamma-rays Gopalswamy, Nat, Mäkelä, Pertti & Yashiro, Seiji, 2021, arXiv:2108.11286
1	Magnetic flux rope structures associated with filament channels: Two case studies Xie, H., Gopalswamy, N., Akiyama, S., Yashiro, S. & Makela, P., 2023, Journal of Atmospheric and Solar-Terrestrial Physics, 252, 106154
0	A Weak Fermi Gamma-ray Event Associated with a Halo CME and a Type II Radio Burst Gopalswamy, N., Mäkelä, P. & Yashiro, S., 2021, arXiv:2105.01212
0	Diffuse Interplanetary Radio Emission from a Polar Coronal Mass Ejection Gopalswamy, N., Makela, P., Yashiro, S. & Akiyama, S., 2021, arXiv:2105.01216
0	Properties of DH Type II Radio Bursts and Their Space Weather Implications Gopalswamy, N. & Mäkelä, P., 2018, arXiv:1810.11173
0	Can Type III Radio Storms be a Source of Seed Particles to Shock Acceleration? Gopalswamy, Nat, Akiyama, Sachiko, Mäkelä, Pertti, Yashiro, Seiji & Xie, Hong, 2022, arXiv:2205.15233
0	The Relation between Type III Radio Storms and CIR Energetic Particles Gopalswamy, Nat, Mäkelä, Pertti, Yashiro, Seiji, Akiyama, Sachiko & Xie, Hong, 2022, arXiv:2205.15852
0	What is Unusual about the Third Largest Geomagnetic Storm of Solar Cycle 24? Gopalswamy, Nat, Yashiro, Seiji, Akiyama, Sachiko, Xie, Hong, Makela, Pertti, Fok, Mei-Ching H. & Ferradas, Cristian P., 2022, essoar.10510553
0	SEPs and CMEs during cycle 23 Mäkelä, Pertti, Gopalswamy, Nat, Yashiro, Seiji, Akiyama, Sachiko, Xie, Hong & Valtonen, Eino, 2009, Universal Heliophysical Processes (Editors: Gopalswamy, N. & Webb, D. F.), IAU Symposium, 257, p. 475
0	Speed and Acceleration of Coronal Mass Ejections Associated with Sustained Gamma-Ray Emission Events Observed by Fermi/LAT Mäkelä, Pertti, Gopalswamy, Nat, Akiyama, Sachiko, Xie, Hong & Yashiro, Seiji, 2023, ApJ, 954, 79
0	Diffuse Interplanetary Radio Emission: Shock Emission or a Type III storm? Gopalswamy, Nat, Akiyama, Sachiko, Mäkelä, Pertti & Yashiro, Seiji, 2020, URSI Radio Science Letters, 2, 49
0	The shock driving capability of a CME inferred from multiwavelength observations Kassa Dagnew, Fithanegest, Gopalswamy, Nat, Belay Tessema, Solomon, Umuhire, Ange Cynthia, Yashiro, Seiji, Mäkelä, Pertti & Xie, Hong, 2020, arXiv:2002.04056
0	Heliocentric Distance of Coronal Mass Ejections at the Time of Energetic Particle Release: Revisiting the Ground Level experiments and instrumentation Gopalswamy, Nat, 2011, International Cosmic Ray Conference, International Cosmic Ray Conference, 10, p. 159
0	Type III Radio Bursts from Solar Eruptions and their Connection to GLE and SGRE Events Gopalswamy, Nat, Kumari, Anshu & Mäkelä, Pertti A., 2023, arXiv:2308.11779
0	Type III Radio Bursts from Solar Eruptions and their Connection to GLE and SGRE Events Gopalswamy, N., Kumari, A. & Mäkelä, P. A., 2023, 2023 XXXVth General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS), p. 79
0	On the properties of solar energetic particle events associated with metric type II radio bursts Mäkelä, Pertti, Gopalswamy, Nat, Xie, Hong, Akiyama, Sachiko, Yashiro, Seiji & Thakur, Neeharika, 2020, arXiv:2001.10506