HECK, J. L.; ZIVNEY, T. L.; MODANI, N. K. A Simplified Approach to Measuring Bond Duration. Financial Services Review, [S. l.], v. 4, n. 1, p. 31–40, 1995. DOI: 10.1016/1057-0810(95)90016-0. Disponível em: https://openjournals.libs.uga.edu/fsr/article/view/3737. Acesso em: 3 jul. 2024.