V. Lipunov, A.Chasovnikov, T.Pogrosheva P.Balanutsa, E. Gorbovskoy, V.Kornilov,  N.Tyurina,  A.Kuznetsov, D. Vlasenko (Lomonosov Moscow State University, SAI), A. Tlatov, V.Senik, A.V. Parhomenko, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory),  O. Gres, N.M. Budnev, O.Ershova (Irkutsk State University), V. Yurkov, A. Gabovich, Yu. Sergienko (Blagoveschensk Educational State University, Blagoveschensk), R. Podesta, C.Lopez, F. Podesta (Observatorio Astronomico Felix Aguilar (OAFA)), H. Levato(Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)) R. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres (The Instituto de Astrofisica de Canarias), D. Buckley, S. Potter (South African Astronomical Observatory)
MASTER OT J135130.87-525534.4, MASTER OT J135130.45-525536.3, Gaia19ciw