@article{article701c6f34,
title   = {Serum cortisol and progestin concentrations in pregnant and non-pregnant Asian elephants (Elephas maximus)},
author = {Oliveira, Cláudio Alvarenga de and Felippe, Érika Cristiane Gutierrez and Chelini, Marie-Odile Monier},
year = {2008},
doi = {10.1016/j.rvsc.2007.05.009},
journal   = {Research in Veterinary Science}
}