Lightowler, C., G. Pidal, P. Chiaramonte, H. R. Maidana, E. Pérez Valega, and R. M. Kaenel. “The Echocardiography Diagnosis of Cor Pulmonale in a Horse”. Revista Veterinaria, vol. 18, no. 1, Jan. 2007, pp. 46-49, doi:10.30972/vet.1811923.