Chacur, M. G. M., Dias, H. S., Papa, P. de M., Papa, F. O., & 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), 1923–1930. https://doi.org/10.5433/1679-0359.2012v33n5p1923