@article{articledac591e0,
title   = {Use of survival analysis as a tool for the genetic improvement of age at first conception in Nellore cattle},
author = {Pereira, E. and Oliveira, H. N. and Eler, Joanir Pereira and Silva, Josineudson A II de V and Van Melis, M H},
year = {2006},
doi = {10.1111/j.1439-0388.2006.00567.x},
journal   = {Journal of Animal Breeding & Genetics}
}