Daolin Wang Yingkun Hou Conghua Wang Jian Xu An Attribute Reduction Algorithm for Concept Lattice Based on Discernible Boolean Matrix. 231-235 2008 FSKD (5) http://dx.doi.org/10.1109/FSKD.2008.195 conf/fskd/2008-5 db/conf/fskd/fskd2008-5.html#WangHWX08