@ARTICLE{Jania_Jacek_A._In_2019, author={Jania, Jacek A.}, volume={vol. 40}, number={No 2}, journal={Polish Polar Research}, pages={171-174}, howpublished={online}, year={2019}, publisher={Polish Academy of Sciences}, publisher={Committee on Polar Research}, type={Nécrologie / Obituary}, title={In Memoriam: Professor Krzysztof Ludwik Birkenmajer (1929–2019) an outstanding Polish geologist and polar researcher}, URL={http://www.journals.pan.pl/Content/111980/PDF/Polish%20Polar%20Res.%202-19%207-In%20Memoriam.pdf}, doi={10.24425/ppr.2019.128373}, keywords={Krzysztof Ludwik Birkenmajer (1929–2019)}, }