Detection of pap, sfa, afa and fim adhesin-encoding operons in avian pathogenic Escherichia coli - Knöbl, Terezinha; Gomes, Tânia Aparecida Tardelli; Vieira, Mônica Aparecida Midolli; Bottino, José Américo; Ferreira, Antonio José Piantino (International Journal of Applied Research in Veterinary Medicine, 2004)