@book { title = {Magyar Tudomány 2019/4}, year = {2019}, publisher = {Akadémiai Kiadó}, isbn = {}, doi = {}, URL = {https://mersz.hu/hivatkozas/matud_po-heading-id_5op2L3KLhEy2leKV2uQ5fw_p2#matud_po-heading-id_5op2L3KLhEy2leKV2uQ5fw_p2} }