astor F, Mata-Campuzano M, Alvarez-Rodríguez M, Alvarez M, Anel L, et al. (2010) Probes and techniques for sperm evaluation by flow cytometry. Reprod Domest Anim 45(2): 67–78.
- 41. R Development Core Team (2012) R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. ISBN 3-900051-07-0, URL http://www.R-project.org/