@book { title = {Magyar Tudomány 2019/9}, year = {2019}, publisher = {Akadémiai Kiadó}, isbn = {}, doi = {}, URL = {https://mersz.hu/hivatkozas/matud_po-heading-id_FGJTQtCfNUmZsb2ckxwNlQ_p15#matud_po-heading-id_FGJTQtCfNUmZsb2ckxwNlQ_p15} }