Fioretto, Emerson Ticona, et al. “Macrostructure of the Cranial Cervical Ganglionar Complex and Distal Vagal Ganglion During Post Natal Development in Dogs”. Brazilian Journal of Veterinary Research and Animal Science, vol. 40, no. 3, Jan. 2003, pp. 197-01, https://doi.org/10.1590/S1413-95962003000300006.