Mellado, M.; Sepúlveda, E.; Mesa-Herrera, C.; Veliz, F. G.; Arevalo, J. R.; Mellado, J.; De Santiago, A. Effects of Heat Stress on Reproductive Efficiency of High Yielding Holstein Cows in a Hot-Arid Environment. Rev. colomb. cienc. pecu. 2013, 26, 193-200.