BAFFOUR, Frank Darkwa; ABASS, Adam. International Journal of Sciences: Basic and Applied Research (IJSBAR), Jordan, v. 30, n. 2, p. 151–166, 2016. Disponível em: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/6395. Acesso em: 13 sep. 2025.