@ARTICLE{Olech_Maria_Contemporary_2011, author={Olech, Maria and Węgrzyn, Michał and Lisowska, Maja and Słaby, Agnieszka and Angiel, Piotr}, number={No 18}, journal={Papers on Global Change IGBP}, howpublished={online}, year={2011}, publisher={Polish Academy of Sciences}, title={Contemporary Changes in Vegetation of Polar Regions}, URL={http://ochroma.man.poznan.pl/Content/98849/PDF/Journal%20102478_volume18_Issue_1_03.pdf}, doi={10.2478/v10190-010-0003-8}, }