@article{Ivanova2014the,
author={Ivanova, E.. and Lavrentev, A..},
title={THE DEPENDENCE OF EGG PRODUCTION OF LAYING HENS ON THE COMPOSITION OF ENZYME PREPARATIONS},
journal={Vestnik of Kazan State Agrarian University},
publisher={Kazan state agrarian University},
year={2014},
pages={128-130},
volume={9},
issue={4},
}