@book { title = {Magyar Tudomány 2020/6}, year = {2020}, publisher = {Akadémiai Kiadó}, isbn = {}, doi = {}, URL = {https://mersz.hu/hivatkozas/matud202006_po-heading-id_qvZeDm66CEyWYnFkxS8_CQ_p1#matud202006_po-heading-id_qvZeDm66CEyWYnFkxS8_CQ_p1} }