Duarte, A., G. Méndez, H. Gómez, D. Alvarenga, and L. Castro. “Evaluation of Antibody Titers Against Infectious Bursal Disease in Backyard Chickens”. Revista Veterinaria, vol. 30, no. 2, Dec. 2019, pp. 98-100, doi:10.30972/vet.3024142.