@article{articleb2997760,
title   = {Escalated aggressive behaviour and facultative parental care in the nest building gladiator frog, Hyla faber},
author = {Martins, Marcio and Pombal Jr., José P. and Haddad, Célio Fernando Baptista},
year = {1998},
doi = {10.1163/156853898x00331},
journal   = {Amphibia-Reptilia}
}