“Effect of twinning on productive and reproductive parameters in cows of Costa Rican specialized dairy herds”, Ciencias Veterinarias, vol. 28, no. 2, pp. 71–89, Dec. 2013, Accessed: Apr. 27, 2024. [Online]. Available: https://www.revistas.una.ac.cr/index.php/veterinaria/article/view/5560