Turcios-Casco, Manfredo A., et al. “Notes on the Reproduction and Thermal Biology of Porthidium Ophryomegas (Serpentes: Viperidae)”. Phyllomedusa: Journal of Herpetology, vol. 19, no. 2, Dec. 2020, pp. 253-7, https://doi.org/10.11606/issn.2316-9079.v19i2p253-257.