@article{Valverde:57765,
      author        = "Valverde, A. and Arenán, H. and Sancho, M. and Contell,
                       J. and Yániz, J. and Fernández, A. and Soler, C.",
      title         = "{Morphometry and subpopulation structure of Holstein bull
                       spermatozoa: Variations in ejaculates and cryopreservation
                       straws}",
      year          = "2016",
}