@book { title = {Magyar Tudomány 2020/12}, year = {2020}, publisher = {Akadémiai Kiadó}, isbn = {}, doi = {}, URL = {https://mersz.hu/hivatkozas/matud202012_po-heading-id_QDKTRnBejkGaY58yxnk3dQ_p18#matud202012_po-heading-id_QDKTRnBejkGaY58yxnk3dQ_p18} }