2009 · Juliano César Dias, Venício José de Andrade, et al. · LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) · 2
1980 · V. R. Vale Filho, Paulo Augusto Pinto, et al. · 9th International Congress on Animal Reproduction and Artificial Insemination, 16th-20th June 1980. III. Symposia (free communications). · 1