@article{articled7c70283,
title   = {Cephalic glands of brazilian reptilia and amphibia .Iv. Histology of labial, premaxillary, and duvernoy's gland in the colubrid snake},
author = {Lopes, R A and Contrera, M G D and Costa, J R V and Campos, Geraldo Maia and Petenusci, Sérgio Olavo},
year = {1987},
journal   = {Gegenbaurs Morphologisches Jahrbuch}
}