@book { title = {Magyar Tudomány 2021/01}, year = {2021}, publisher = {Akadémiai Kiadó}, isbn = {}, doi = {}, URL = {https://mersz.hu/hivatkozas/matud202101_po-heading-id_zuIfo_34iECGjepy7PN83Q_p40#matud202101_po-heading-id_zuIfo_34iECGjepy7PN83Q_p40} }