Searching for Optical Counterparts of LIGO/Virgo Events in O2 Run. - Elena Mazaeva; Alexei Pozanenko; Alina Volnova; Pavel Minaev; Sergey Belkin; Raguli Inasaridze; Evgeny Klunko; Anatoly Kusakin; Inna Reva; Vasilij Rumyantsev; Artem Novichonok; Alexander Moskvitin; et al. (DAMDID/RCDL (Selected Papers), 2019)