Bochini, J. C., R. D. Alvisi, J. A. Negrão, E. E. T. da S. Hucke, and L. F. Felicio. “Central and Peripheral Oxytocin Profiles During Milking in Ewes”. Brazilian Journal of Veterinary Research and Animal Science, vol. 51, no. 1, Aug. 2014, pp. 68-77, doi:10.11606/issn.1678-4456.v51i1p68-77.