@misc{Lengyel_György_Two_2020, author={Lengyel, György}, journal={Europe on test: the onus of the past}, pages={36-49}, howpublished={online}, year={2020}, publisher={Warsaw: Polska Akademia Nauk,}, type={Article}, title={Two Risky Options and Two Hidden Sources of European Integration}, URL={http://publikacje.pan.pl/Content/118159/PDF/10_Lengyel.pdf}, }