@book{1622548,
	author = {Víctor Flores, Fernando Gomide, Andrzej Janusz, Claudio Meneses, Duoqian Miao, Georg Peters, Dominik ?l?zak, Guoyin Wang, Richard Weber, Yiyu Yao},
	title = {Rough Sets},
	publisher = {Springer},
	url = {https://link.springer.com/openurl?genre=book&isbn=978-3-319-47160-0}
}