WOERHEIDE, W.; PERSSON, D. An Index of Portfolio Diversification. Financial Services Review, [S. l.], v. 2, n. 2, p. 73–85, 1992. DOI: 10.1016/1057-0810(92)90003-U. Disponível em: https://openjournals.libs.uga.edu/fsr/article/view/3710. Acesso em: 3 jul. 2024.