@book {
	author = {Bollobás, Enikő},
	title = {"Ami szép, az nehéz"},
	year = {2021},
	publisher = {Akadémiai Kiadó},
	isbn = {978 963 454 580 4},
	doi = {10.1556/9789634545804},
	URL = {https://mersz.hu/kiadvany/824}
}