Clavijo, Francisco Esteban, Luis Femando Rodríguez, Ivan Yánez, German Arturo Godoy, Juan Pablo Garzon, Diego Andres Galarza, and Pablo Roberto Marini. 2016. “Productive and Reproductive Evaluation of Holsteins and Brown Swiss X Holstein in Ecuador”. Asian Journal of Agriculture and Food Sciences 4 (4). https://ajouronline.com/index.php/AJAFS/article/view/4039.