@book{Ganter99,
	title = {Formal Concept Analysis: Mathematical foundations},
	author = {B. Ganter and R. Wille},
	publisher = {Springer},
	year = {1999},
	biburl = {http://www.bibsonomy.org/bibtex/2650b71add7b418d99d8e72d315445433/stumme},
	keywords = {FCA OntologyHandbook }
}