The papers in which MHD models of plasma and magnetic field were used for the calculation of the radio emission, without the use of the GX simulator tool:
http://adsabs.harvard.edu/abs/2015A%26A...575A..47R
http://adsabs.harvard.edu/abs/2015SoPh..290.1173K
http://adsabs.harvard.edu/abs/2016SoPh..291..823K

And the use of the GX simulator:
http://adsabs.harvard.edu/abs/2016SoPh..291.1341S
http://adsabs.harvard.edu/abs/2017A%26A...604A.116G

The papers contain no much details of the data format... In general, if we have a 3D cube describing the magnetic field and plasma parameters in some XYZ volume, it can be easily converted into the appropriate IDL save file that GX Simulator can read. On the other hand, if your model describes the magnetic loop only (e.g., the straight magnetic tube in cylindrical coordinates), then some additional transformations would be needed to create a realistic curved loop.

Jim Davenport's catalogue of superflares detected in WL with Kepler:

http://adsabs.harvard.edu/abs/2016ApJ...829...23D

Superflares on solar-type stars; stellar flares; pulsations:
1. Landini, M., Monsignori Fossi, B. C., Pallavicini, R., Piro, L., EXOSAT detection of an X-ray flare from the solar type star Pi-prime UMa, A&A, v. 157, p. 217, 1986.
2. Rodono, M., Cutispoto, G., Pazzani, V., Catalano, S., Byrne, P.B., Doyle, J.G., Butler, C.J., Andrews, A.D., Blanco, C., Marilli, E., Linsky, J.L., Scaltriti, F., Busso, M., Cellino, A., Hopkins, J.L., Okazaki, A., Hayashi, S.S., Zeilik, M., Helston, R., Henson, G., Smith, P., Simon, T., Rotational modulation and flares on RS CVn and BY Dra-type stars. I - Photometry and SPOT models for BY Dra, AU Mic, AR Lac, II Peg and V 711 Tau (= HR 1099), A&A, v. 165, p. 135, 1986.
3. Schaefer, B.E., Flashes from normal stars, ApJ, v. 337, p. 927, 1989.
4. Schaefer, B.E., King, J.R., Deliyannis, C.P., Superflares on Ordinary Solar-Type Stars, ApJ, v. 529, p. 1026, 2000.
5. Mullan, D.J., Mathioudakis, M., Bloomfield, D.S., Christian, D.J., A Comparative Study of Flaring Loops in Active Stars, ApJSS, v. 164, p. 173, 2006.
6. Pandey, J.C., Singh, K.P., A study of X-ray flares - I. Active late-type dwarfs, MNRAS, v. 387, p. 1627, 2008.
7. Pandey, J.C., Srivastava, A.K., Observations of X-Ray Oscillations in ξ Boo: Evidence of a Fast-Kink Mode in the Stellar Loops, ApJL, v. 697, p. L153, 2009.
8. Walkowicz, L.M., Basri, G., Batalha, N., Gilliland, R.L., Jenkins, J., Borucki, W.J., Koch, D., Caldwell, D., Dupree, A.K., Latham, D.W., Meibom, S., Howell, S., Brown, T.M., Bryson, S., White-light Flares on Cool Stars in the Kepler Quarter 1 Data, AJ, v. 141, id. 50, 2011.
9. Balona, L., Kepler observations of flaring in A-F type stars, MNRAS, v. 423, p. 3420, 2012.
10. Maehara, H., Shibayama, T., Notsu, S., Notsu, Y., Nagao, T., Kusaba, S., Honda, S., Nogami, D., Shibata, K., Superflares on solar-type stars, Nature, v. 485, p. 478, 2012.
11. Shibata, K., Isobe, H., Hillier, A., Choudhuri, A.R., Maehara, H., Ishii, T.T., Shibayama, T., Notsu, S., Notsu, Y., Nagao, T., Honda, S., Nogami, D., Can Superflares Occur on Our Sun? PASJ, v. 65, id. 49, 2013.
12. Notsu, S., Honda, S., Notsu, Y., Nagao, T., Shibayama, T., Maehara, H., Nogami, D., Shibata, K., High-Dispersion Spectroscopy of the Superflare Star KIC 6934317, PASJ, v. 65, id. 112, 2013.
13. Kowalski, A.F., Hawley, S.L., Wisniewski, J.P., Osten, R.A., Hilton, E.J., Holtzman, J.A., Schmidt, S.J., Davenport, J.R.A., Time-resolved Properties and Global Trends in dMe Flares from Simultaneous Photometry and Spectra, ApJS, v. 207, id. 15, 2013.
14. Shibayama, T., Maehara, H., Notsu, S., Notsu, Y., Nagao, T., Honda, S., Ishii, T.T., Nogami, D., Shibata, K., Superflares on Solar-type Stars Observed with Kepler. I. Statistical Properties of Superflares, ApJS, v. 209, id. 5, 2013.
15. Notsu, Y., Shibayama, T., Maehara, H., Notsu, S., Nagao, T., Honda, S., Ishii, T.T., Nogami, D., Shibata, K., Superflares on Solar-type Stars Observed with Kepler II. Photometric Variability of Superflare-generating Stars: A Signature of Stellar Rotation and Starspots, ApJ, v. 771, id. 127, 2013.
16. Anfinogentov, S., Nakariakov, V.M., Mathioudakis, M., Van Doorsselaere, T., Kowalski, A.F., The Decaying Long-period Oscillation of a Stellar Megaflare, ApJ, v. 773, id. 156, 2013.
17. Karoff, C., Comparison of Photometric Variability before and after Stellar Flares, ApJL, v. 781, id. L22, 2014.
18. Wichmann, R., Fuhrmeister, B., Wolter, U., Nagel, E., Kepler super-flare stars: what are they?, A&A, v. 567, id. A36, 2014.
19. Candelaresi, S., Hillier, A., Maehara, H., Brandenburg, A., Shibata, K., Superflare Occurrence and Energies on G-, K-, and M-type Dwarfs, ApJ, v. 792, id. 67, 2014.
20. Wu, C.-J., Ip, W.-H., Huang, L.-C., A Study of Variability in the Frequency Distributions of the Superflares of G-type Stars Observed by the Kepler Mission, ApJ, v. 798, id. 92, 2015.
21. Balona, L.A., Flare stars across the H-R diagram, MNRAS, v. 447, p. 2714, 2015.
22. Maehara, Hiroyuki; Shibayama, Takuya; Notsu, Yuta; Notsu, Shota; Honda, Satoshi; Nogami, Daisaku; Shibata, Kazunari, Statistical properties of superflares on solar-type stars based on 1-min cadence data, EP&S, v. 67, id. 59, 2015.
23. Balona, L.A., Broomhall, A.-M., Kosovichev, A., Nakariakov, V.M., Pugh, C.E.; Van Doorsselaere, T., Oscillations in stellar superflares, MNRAS, v. 450, p. 956, 2015.
24. Notsu, Y., Honda, S., Maehara, H., Notsu, S., Shibayama, T., Nogami, D., Shibata, K., High dispersion spectroscopy of solar-type superflare stars. I. Temperature, surface gravity, metallicity, and vsini, PASJ, v. 67, id. 32, 2015.
25. Notsu, Y., Honda, S., Maehara, H., Notsu, S., Shibayama, T., Nogami, D., Shibata, K., High dispersion spectroscopy of solar-type superflare stars. II. Stellar rotation, starspots, and chromospheric activities, PASJ, v. 67, id. 33, 2015.
26. Honda, S., Notsu, Y., Maehara, H., Notsu, S., Shibayama, T., Nogami, D., Shibata, K., High dispersion spectroscopy of solar-type superflare stars. III. Lithium abundances, PASJ, v. 67, id. 85, 2015.
27. Pugh, C.E., Nakariakov, V.M., Broomhall, A.-M., A Multi-period Oscillation in a Stellar Superflare, ApJL, v. 813, id. L5, 2015.
28. Katsova, M.M., Livshits, M.A., The Origin of Superflares on G-Type Dwarf Stars of Various Ages, Solar Phys., v. 290, p. 3663, 2015.
29. Pye, J.P., Rosen, S., Fyfe, D., Schröder, A.C., A survey of stellar X-ray flares from the XMM-Newton serendipitous source catalogue: HIPPARCOS-Tycho cool stars, A&A, v. 581, id. A28, 2015.
30. Karoff, C., Knudsen, M.F., De Cat, P., Bonanno, A., Fogtmann-Schulz, A., Fu, J., Frasca, A., Inceoglu, F., Olsen, J., Zhang, Y., Hou, Y., Wang, Y., Shi, J., Zhang, W., Observational evidence for enhanced magnetic activity of superflare stars, Nature Comm., v. 7, id. 11058, 2016.
31. Pugh, C.E., Armstrong, D.J., Nakariakov, V.M., Broomhall, A.-M., Statistical properties of quasi-periodic pulsations in white-light flares observed with Kepler, MNRAS, v. 459, p. 3659, 2016.
32. Davenport, J.R.A., The Kepler Catalog of Stellar Flares, ApJ, v. 829, id. 23, 2016.
33. Cho, I.-H., Cho, K.-S., Nakariakov, V.M., Kim, S., Kumar, P., Comparison of Damped Oscillations in Solar and Stellar X-Ray flares, ApJ, v. 830, id. 110, 2016.
34. Balona, L.A., Švanda, M., Karlický, M., Differential rotation, flares and coronae in A to M stars, MNRAS, v. 463, p. 1740, 2016.
35. Kitchatinov, L.L., Olemskoy, S.V., Dynamo model for grand maxima of solar activity: can superflares occur on the Sun? MNRAS, v. 459, p. 4353, 2016.
36. Notsu, Y., Honda, S., Maehara, H., Notsu, S., Namekata, K., Nogami, D., Shibata, K., Spectroscopic observations of active solar-analog stars with high X-ray luminosity, as a proxy of superflare stars, PASJ, v. 69, id. 12, 2017.
37. Maehara, H., Notsu, Y., Notsu, S., Namekata, K., Honda, S., Ishii, T.T., Nogami, D., Shibata, K., Starspot activity and superflares on solar-type stars, PASJ, v. 69, id. 41, 2017.
38. Toriumi, S., Schrijver, C.J., Harra, L.K., Hudson, H., Nagashima, K., Magnetic Properties of Solar Active Regions That Govern Large Solar Flares and Eruptions, ApJ, v. 834, id. 56, 2017.

Reviews on stellar flares and stellar activity:
1. Dulk, G.A., Radio emission from the sun and stars, ARA&A, v. 23, p. 169, 1985.
2. Haisch, B., Strong, K.T., Rodono, M., Flares on the sun and other stars, ARA&A, v. 29, p. 275, 1991.
3. Bastian, T.S., Stellar flares, SSRv, v. 68, p. 261, 1994.
4. Güdel, M., Stellar Radio Astronomy: Probing Stellar Atmospheres from Protostars to Giants, ARA&A, v. 40, p. 217, 2002.
5. Favata, F., Micela, G., Stellar Coronal Astronomy, SSRv, v. 108, p. 577, 2003.
6. Güdel, M., X-ray astronomy of stellar coronae, A&ARv, v. 12, p. 71, 2004.
7. Berdyugina, S.V., Starspots: A Key to the Stellar Dynamo, LRSP, v. 2, id. 8, 2005.
8. Gershberg, R.E., Solar-Type Activity in Main-Sequence Stars, Springer Berlin Heidelberg, 2005.
9. Güdel, M., The Sun in Time: Activity and Environment, LRSP, v. 4, id. 3, 2007.
10. Güdel, M., Nazé, Y., X-ray spectroscopy of stars, A&ARv, v. 17, p. 309, 2009.
11. Strassmeier, Klaus G., Starspots, A&ARv, v. 17, p. 251, 2009.
12. Benz, A.O., Güdel, M., Physical Processes in Magnetically Driven Flares on the Sun, Stars, and Young Stellar Objects, ARA&A, v. 48, p. 241, 2010.

Pulsations in stellar flares:
1. Stepanov, A.V., Zaitsev, V.V., Nakariakov, V.M., Coronal Seismology: Waves and Oscillations in Stellar Coronae Flare Plasma, Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, Germany, 2012.
2. Van Doorsselaere, T., Kupriyanova, E.G., Yuan, D., Quasi-periodic Pulsations in Solar and Stellar Flares: An Overview of Recent Results (Invited Review), Solar Phys., v. 291, p. 3143, 2016.

Superflares on the Sun (historical evidence):
1. Usoskin, I.G., A history of solar activity over millennia, LRSP, v. 14, id. 3, 2017.