@ARTICLE{_80th_2009, volume={vol. 30}, number={No 4}, journal={Polish Polar Research}, howpublished={online}, year={2009}, publisher={Polish Academy of Sciences}, publisher={Committee on Polar Research}, title={80th Anniversary of Professor Krzysztof Birkenmajer}, URL={http://www.journals.pan.pl/Content/110554/PDF-MASTER/PPR30-299.pdf}, }