@book { title = {Magyar Tudomány 2021/02}, year = {2021}, publisher = {Akadémiai Kiadó}, isbn = {}, doi = {}, URL = {https://mersz.hu/hivatkozas/matud202102_po-heading-id_iNOem4FLZE2olPcxn1DVbg_p11#matud202102_po-heading-id_iNOem4FLZE2olPcxn1DVbg_p11} }