Engelbert Mephu Nguifo Vincent Duquenne Michel Liquiere Introduction - Concept Lattice-Based Theory, Methods and Tools for Knowledge Discovery in Databases: Applications. 177-180 2003 17 Applied Artificial Intelligence 3 http://taylorandfrancis.metapress.com/openurl.asp?genre=article&issn=0883-9514&volume=17&issue=3&spage=177 db/journals/aai/aai17.html#NguifoDL03