NNENNA, O. M. . Verifying the Effects of Risk Variables on Return Volatility of Sector Price Indices in the Nigeria Stock Exchange. Asian Economic and Financial Review , [S. l.], v. 2, n. 2, p. 400–406, 2012. Disponível em: https://archive.aessweb.com/index.php/5002/article/view/767. Acesso em: 3 jul. 2024.