P. Moriel, Scatena, T. S., Filho, O. Gá, Cooke, R. F., and Vasconcelos, J. L. M.,
“Concentrations of Progesterone and Insulin in Serum of Nonlactating Dairy Cows in Response to Carbohydrate Source and Processing”,
Journal of Dairy Science, vol. 91, no. 12, pp. 4616 - 4621, 2008.
J. B. Pescara, Filho, O. Gá, Losi, T. C., Cooke, R. F., and Vasconcelos, J. L. M.,
“Serum progesterone concentration and conception rate of beef cows supplemented with ground corn after a fixed-time artificial insemination protocol”,
Arquivo Brasileiro de Medicina Veterinária e Zootecnia, vol. 62, no. 1, pp. 130 - 135, 2010.