Ferreira, Vivian Lindmayer, and Tania de Freitas Raso. 2011. “Survey of Cryptococcal Antigens in Urban Pigeons (Columba Livia) in Sao Paulo State, Brazil”. International Journal of Poultry Science 11 (1): 1–4. https://doi.org/10.3923/ijps.2012.1.4.