Cardoso, Júlio Roquete, et al. “Aspects of the Irrigation of the Atriumventricular Node and Trunk of the Atriumventricular Fascicle in Girolando Crossbred Bovines”. Brazilian Journal of Veterinary Research and Animal Science, vol. 40, no. 5, Jan. 2003, pp. 314-20, https://doi.org/10.1590/S1413-95962003000500001.