NUORTIMO, Kalle; HÄRKÖNEN, Janne. The first wave impact of the COVID-19 pandemic on the Nasdaq Helsinki stock exchange: Weak signal detection with managerial implications. Journal of Intelligence Studies in Business, [S. l.], v. 11, n. 2, p. 30–42, 2021. DOI: 10.37380/jisib.v11i2.702. Disponível em: https://journal.lu.lv/JISIB/article/view/2321.. Acesso em: 23 dec. 2024.