@ARTICLE{Kleer_Jerzy_Poland_2016,
 author={Kleer, Jerzy},
 number={No 23},
 journal={Papers on Global Change IGBP},
 howpublished={online},
 year={2016},
 publisher={Polish Academy of Sciences},
 title={Poland and Global Threats},
 URL={http://journals.pan.pl/Content/100314/PDF/9%20POLAND%20AND%20GLOBAL.pdf},
 doi={10.1515/igbp-2016-0007},
}