Paz, R.C.R. da, Teixeira, R.H.F. and Guimarães, M.A. de B.V. (2006) “Semen characteristics evaluation in capuchin monkey (Cebus apella) in captivity, before and after bilateral vasectomy”, Brazilian Journal of Veterinary Research and Animal Science, 43(4), pp. 561–567. doi:10.11606/issn.1678-4456.bjvras.2006.26473.