Infection of Triatoma guasayana, Triatoma sordida and Triatoma infestans by Trypanosoma cruzi from a Naturally Infected Opossum - Schweigmann Nicolás; Pietrokovsky Silvia; Conti Osvaldo; Escosteguy Mariana; Bottazzi Victoria; Solarz Nora; Wisnivesky-Colli Cristina (Memorias do Instituto Oswaldo Cruz, 1997)