Jean Villerd Sylvie Ranwez Michel Crampes David Carteret Jean Michel Penalva Using Concept Lattices for Visual Navigation Assistance in Large Databases: Application to a Pantent Database. 2007 CLA http://ceur-ws.org/Vol-331/Villerd.pdf conf/cla/2007 db/conf/cla/cla2007.html#VillerdRCCP07