Suratna, S., Widjanarko, H. ., & Utomo, H. S. . (2021). Does Trading Volume Activity React To The Announcement of Large-Scale Social Restrictions During The Covid-19 Pandemic?. RSF Conference Series: Business, Management and Social Sciences, 1(3), 301–307. https://doi.org/10.31098/bmss.v1i3.342