Akhadiyah L, Isbanah Y. Analisis Komparatif Abnormal Return dan Trading Volume Activity Emiten Sektor Mining Berdasarkan Pengumuman Kasus Pasien Covid-19 Pertama di Indonesia. JIM [Internet]. 2021Jul.12 [cited 2024May5];9(3):979-8. Available from: https://journal.unesa.ac.id/index.php/jim/article/view/13814