Chacur, M. G. M., Dias, H. S., Papa, P. de M., Papa, F. O. e Melo-Onã, C. M. (2012) “Effect of refrigeration systems upon frozen bull sperm viability assessed by computer-assisted sperm analysis and fluorescent probes”, Semina: Ciências Agrárias, 33(5), p. 1923–1930. doi: 10.5433/1679-0359.2012v33n5p1923.