@book { title = {Magyar Tudomány 2021/11}, year = {2021}, publisher = {Akadémiai Kiadó}, isbn = {}, doi = {}, URL = {https://mersz.hu/hivatkozas/matud202111_po-heading-id_50xFxrF0g0S1eUg4Z5ZcuQ_p2#matud202111_po-heading-id_50xFxrF0g0S1eUg4Z5ZcuQ_p2} }