AYKAÇ ALP, Elçin; ALP, Selçuk; FINDIKÇI ERDOĞAN, Mefule; DEMIR, Ahmet Oğuz. Determining the Impact of the COVID-19 Pandemic on Commercial Activities in Istanbul. Journal of Operations Intelligence, [S. l.], v. 2, n. 1, p. 50–77, 2024. DOI: 10.31181/jopi21202414. Disponível em: http://jopi-journal.org/index.php/jopi/article/view/14.. Acesso em: 30 apr. 2026.