ROMAN, Marius-Daniel, et al. “MODELLING AND SIMULATION OF BOD AND COD FOR EFFLUENT LEVELS OF AN AERATION TANK FROM GHERLA WASTE WATER TREATMENT PLANT”. Studia Universitatis Babeș-Bolyai Chemia, vol. 60, no. 2, June 2015, pp. 399-08, https://studia.reviste.ubbcluj.ro/index.php/chemia/article/view/8460.