@ARTICLE{Zań_R.S._Diurnal_2013, author={Zań, R.S. and Kowalski, C.J. and Madany, J. and Roliński, Z. and Bojarska-Junak, A.}, number={No 4}, journal={Polish Journal of Veterinary Sciences}, howpublished={online}, year={2013}, publisher={Polish Academy of Sciences Committee of Veterinary Sciences}, publisher={University of Warmia and Mazury in Olsztyn}, title={Diurnal and seasonal changes in endogenous melatonin levels in the blood plasma in dogs}, URL={http://journals.pan.pl/Content/99219/PDF/22.pdf}, doi={10.2478/pjvs-2013-0110}, }