G. V. Gomes, S. J. Suda, A. Pereira Rosa, and F. de Ávila Rodrigues, “EVALUATION AND COMPARATIVE STUDY OF THE ENERGY POTENTIAL OF BIOGAS PRODUCED IN UASB REACTORS OF SEWAGE TREATMENT STATION”, J. Eng. Exact Sci., vol. 3, no. 7, pp. 0899–0919, Sep. 2017.