Isolation of chicken astrovirus from specific pathogen-free chicken embryonated eggs - Nuñez, Luis Fabian N; Santander-Parra, Silvana Hipatia; Mettifogo, Elena; Catroxo, Márcia Helena Braga; Astolfi-Ferreira, Claudete Serraro; Ferreira, Antonio José Piantino (Poultry Science, 2015)