SULIGA, M. Expiration day effects of stock and index futures on the Warsaw Stock Exchange before and in the initial phase of the COVID-19 pandemic. Managerial Economics, [S. l.], v. 24, n. 1, p. 39, 2024. DOI: 10.7494/manage.2023.24.1.39. Disponível em: https://journals.agh.edu.pl/manage/article/view/5970. Acesso em: 9 may. 2024.