P. Sanchez-Aparicio, D. Mota-rojas, R. Ramirez Necoechea, A. Olmos-Hernandez, M. Alonso-Spilsbury, D. Villanueva-Garcia, M.E. Trujillo-Ortega and R. Hernandez-Gonzalez
Journal of Animal and Veterinary Advances 6 ( 2 ): 267 - 271 , 2007