Cabral, Carla Heloisa Avelino, Mario Fonseca Paulino, Edenio Detmann, Egídio Lisboa Valente, Lívia Vieira de Barros, and Carlos Eduardo Avelino Cabral. 2014. “Levels of Supplementation for Grazing Pregnant Beef Heifers”. Bioscience Journal 30 (1). Uberlândia, MG:226-34. https://seer.ufu.br/index.php/biosciencejournal/article/view/18068.