Sasa, M. and Curtis, S. 2006. Field observations of mating behavior in the neck-banded snake Scaphiodontophis annulatus (Serpentes: Colubridae). Revista de Biología Tropical. 54, 2 (Jun. 2006), 647–650. DOI:https://doi.org/10.15517/rbt.v54i2.13940.