Diversity and effective population size of four horse breeds from microsatellite DNA markers in South-Central Mexico oleh J. F. Vázquez-Armijo, G. M. Parra-Bracamonte, M. A. Velazquez, A. M. Sifuentes-Rincón, J. L. Tinoco-Jaramillo, P. Ambriz-Morales, W. Arellano-Vera, V. R. Moreno-Medina