LIGO/Virgo S190412m: J-GEM optical/NIR follow-up observations.
Published in 2019 by
M. Tanaka,
Y. Niino,
T. Morokuma,
N. Tominaga,
Y. Utsumi,
K. Yanagisawa,
K. L. Murata,
H. Onozato,
H. Akitaya,
R. Itoh 
,
Y. Sekiguchi,
Y. Oasa
,
Y. Sekiguchi,
Y. Oasa
