ABDALLAH, Khaled Zaher; HAMMAM, Gina. Correlation between Biochemical Oxygen Demand and Chemical Oxygen Demand for Various Wastewater Treatment Plants in Egypt to Obtain the Biodegradability Indices. International Journal of Sciences: Basic and Applied Research (IJSBAR), Jordan, v. 13, n. 1, p. 42–48, 2014. Disponível em: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/1382. Acesso em: 28 sep. 2025.