EVBAYIRO-OSAGIE, E. I. Month-of-the-Year Calendar Anomalies in Portfolio Excess Returns in the Nigerian Stock Market. Nigerian Academy of Management Journal, [S. l.], v. 11, n. 1, p. 107–120, 2023. Disponível em: https://namj.tamn-ng.org/index.php/home/article/view/322. Acesso em: 18 may. 2026.