Costa, K. A., E. W. O. Scheffer, P. L. Weinert, and E. L. Silveira. “EVALUATION OF THE QUALITY OF THE RIO VERDE WATER, PONTA GROSSA, PR: A STUDY ON THE CONDITIONS OF AQUATIC LIFE MAINTENANCE AND THE EUTROPHICATION PROCESS”. Eclética Química, vol. 43, no. 2, Aug. 2018, pp. 51-58, doi:10.26850/1678-4618eqj.v43.2.2018.p51-58.