@ARTICLE{Kostiw_Michał_The_2011, author={Kostiw, Michał}, volume={vol. 51}, number={No 3}, journal={Journal of Plant Protection Research}, howpublished={online}, year={2011}, publisher={Committee of Plant Protection PAS}, publisher={Institute of Plant Protection – National Research Institute}, title={The Occurrence of Major Potato Viruses in Poland}, URL={http://www.czasopisma.pan.pl/Content/88419/PDF/JPPR_51(3)_02_Kostiw.pdf}, doi={10.2478/v10045-011-0035-7}, }