Analysis and occurrence of residues of the hormones estriol, 17α- ethinylestradiol and 17β-estradiol in urban water supply by HPLC-DAD - Torres, Nádia Hortense; Ferreira, Luiz Fernando Romanholo; Américo, Juliana Heloísa Pinê; Andrade, Graziela Cristina Rossi de Moura; Freguglia, Rosana Maria de Oliveira; Tornisielo, Valdemar Luiz (IOSR Journal of Engineering, 2012)