@book { title = {Magyar Tudomány 2021/01}, year = {2021}, publisher = {Akadémiai Kiadó}, isbn = {}, doi = {}, URL = {https://mersz.hu/hivatkozas/matud202101_po-heading-id_zqpoa0sdxU-13krzJ-62sw_p17#matud202101_po-heading-id_zqpoa0sdxU-13krzJ-62sw_p17} }