SUSHANTA JOYDEEP LAHIRI. Topic: A Study of Informational Efficiency in Nifty 50 - Event Study. European Economic Letters (EEL), [S. l.], v. 13, n. 3, p. 370–376, 2023. DOI: 10.52783/eel.v13i3.263. Disponível em: https://www.eelet.org.uk/index.php/journal/article/view/263. Acesso em: 26 may. 2026.