Reference

Victor Mundo-Hernandez, Hublester Dominguez-Vega, Yuriana Gomez-Ortiz, Tamara Rubio-Blanco, Leroy Soria-Diaz, Javier Manjarrez (2017): Hibernation refuge of Thamnophis scalaris COPE, 1861, in Central Mexico – Herpetozoa – 29_3_4: 198 - 200.