@ARTICLE{Siciński_Jacek_In_2017, author={Siciński, Jacek}, volume={vol. 38}, number={No 2}, journal={Polish Polar Research}, pages={263-264}, howpublished={online}, year={2017}, publisher={Polish Academy of Sciences}, publisher={Committee on Polar Research}, title={In Memoriam Professor Ryszard Ligowski (1946–2017) a scientist and a polar explorer}, URL={http://rhis.czasopisma.pan.pl/Content/100877/PDF/10183_Volume38_Issue2_08_paper.pdf}, doi={10.1515/popore-2017-0016}, }