@article{Chetvertakova2012sperm,
author={Chetvertakova, E.V.},
title={SPERM QUALITY OF THE STUD BULLS OF VARIOUS BREEDS DEPENDING ON THE YEAR SEASON},
journal={Bulletin of KSAU},
publisher={Krasnoyarsk State Agrarian University},
year={2012},
pages={99-103},
volume={},
issue={7},
}