Segura-Correa, J. C., Magaña-Monforte, J. G., Centurión-Castro, F. and Segura-Correa, V. M. (2013) “Effect of breed group and age at first calving on the number of calvings during the lifetime of Zebu cows”, Archivos de Medicina Veterinaria, 45(1), pp. 41–44. doi: 10.4067/S0301-732X2013000100007.