Effects of three cryopreservation systems on longevity of stallion sperm after thawing - Pasquini, D. F. [UNESP]; Ferreira, H. N. [UNESP]; Papa, Frederico Ozanam [UNESP]; Dell Aqua, J. A. [UNESP]; Alvarenga, Marco Antonio [UNESP] (CSIRO Publishing, 2008)