I. C. M. Camargo, J. C. P. Veras, S. Ribeiro, R. A. Kawashita-Ribeiro, R. de Fraga, and A. P. Santos Junior, “Sexual dimorphism in the South American water snake Helicops polylepis (Serpentes: Dipsadidae)”, Phyllomedusa, vol. 20, no. 1, pp. 15–25, Jun. 2021, doi: 10.11606/issn.2316-9079.v20i1p15-25.