@article{Kinal_S._The_2011,
 author={Kinal, S. and Słupczyńska, M. and Twardoń, J. and Bednarski, M. and Preś, J. and Bodarski, R. and Ochota, M. and Dejneka, G.},
 number={No 1},
 howpublished={online},
 journal={Polish Journal of Veterinary Sciences},
 year={2011},
 publisher={Polish Academy of Sciences Committee of Veterinary Sciences},
 publisher={University of Warmia and Mazury in Olsztyn},
 title={The influence of administration of biotin and zinc chelate (Zn-methionine) to cows in the first and second trimester of lactation on their health and productivity},
 doi={10.2478/v10181-011-0015-x},
}