Jirapond Tadrat Veera Boonjing Puntip Pattaraintakorn A Framework for using Rough Sets and Formal Concept Analysis in Case Based Reasoning. 227-232 2007 conf/iri/2007 IRI http://dx.doi.org/10.1109/IRI.2007.4296625 db/conf/iri/iri2007.html#TadratBP07