@book { title = {Magyar Tudomány 2021/09}, year = {2021}, publisher = {Akadémiai Kiadó}, isbn = {}, doi = {}, URL = {https://mersz.hu/hivatkozas/matud202109_po-heading-id_tv6TiEEtNUy0r8pvwccSgw_p10#matud202109_po-heading-id_tv6TiEEtNUy0r8pvwccSgw_p10} }