PATHAK, Rajesh; MITRA, Amarnath. Predictability and predictors of volatility smirk: a study on index options. Business: Theory and Practice, [S. l.], v. 18, p. 64–70, 2017. DOI: 10.3846/btp.2017.007. Disponível em: https://journals.vilniustech.lt/index.php/BTP/article/view/8156. Acesso em: 22 may. 2025.