%0 Book %1 ganter1999formal %A Ganter, Bernhard %A Wille, Rudolf %C Berlin; New York %D 1999 %I Springer %K fca foundations ganter mathemtical wille %T Formal concept analysis : mathematical foundations %U http://www.amazon.de/Formal-Concept-Analysis-Mathematical-Foundations/dp/3540627715/ref=sr_1_1?ie=UTF8&qid=1417077494&sr=8-1&keywords=formal+concept+analysis+mathematical+foundations