Miharja, Rifki Andi, and Vincentia Wahju Widajatun. 2021. “Announcement of COVID-19 Cases in Indonesia on the Indonesian Stock Market: Analysis of a Study of Events in Miscellaneous Industry”. Technium Social Sciences Journal 17 (1). Constanta, Romania:175-83. https://techniumscience.com.techniumscience.pluscommunication.eu/index.php/socialsciences/article/view/2692.