@article{article42ba9a88,
title   = {Progesterone-based fixed-time artificial insemination protocols for dairy cows: Gonadotropin-releasing hormone versus estradiol benzoate at initiation and estradiol cypionate versus estradiol benzoate at the end},
author = {Melo, Leonardo de França e and Monteiro Junior, Pedro Leopoldo Jerônimo and Surjus, R. S and Drum, Jéssica Nora and Wiltbank, M.C. and Sartori, Roberto},
year = {2016},
doi = {10.3168/jds.2016-11220},
journal   = {Journal of Dairy Science}
}