Martinez Aranzalez, J. R., and G. E. Silveira Alves. “Equine Gastric Ulcer Syndrome: Risk Factors and Therapeutic Aspects”. Revista Colombiana De Ciencias Pecuarias, vol. 27, no. 3, July 2014, pp. 157-70, https://revistas.udea.edu.co/index.php/rccp/article/view/324889.