[1]
H. . Zaher, “Description of the cephalic muscles and gland morphology of clelia plumbea and three presumably related species (Serpentes, Xenodontinae)”, Pap. Avulsos Zool., vol. 40, pp. 17–63, Feb. 1997, doi: 10.11606/0031-1049.1997.40.p17-63.