J. C. Peixoto e S. E. Fontoura-da-Silva, “TOTAL AND FECAL COLIFORMS CONTAMINATION IN FAUCETS AND FLUSH BOTTOMS IN PUBLIC WASHROOMS SITED IN SHOPPING MALLS OF CURITIBA, STATE OF PARANA, BRAZIL”, Estud Biol., vol. 29, nº 68/69, nov. 2007.