@misc{_Europa_2010, volume={20}, copyright={Rights Reserved - Free Access}, address={Warszawa}, journal={Europa XXI}, howpublished={online}, year={2010}, publisher={IGiPZ PAN}, language={eng}, title={Europa XXI 20 (2010), Contents}, type={Text}, URL={http://rcin.org.pl/Content/2134/PDF/WA51_13602_r2010-nr20_EuropaXXI.pdf}, keywords={spatial barriers, state borders, flows of persons, cross-border traffic, commodity flows, foreign trade, cross-border cooperation, tourism, landscape conservation, nature conservation, accessibility, border regions, European Union, Europe, Vistula Lagoon, Poland, Slovakia, Germany}, }