Tetsuya Murai Sadaaki Miyamoto Yasuo Kudo A Logical Representation of Images by Means of Multi-rough Sets for Kansei Image Retrieval. 244-251 2007 conf/rskt/2007 RSKT http://dx.doi.org/10.1007/978-3-540-72458-2_30 db/conf/rskt/rskt2007.html#MuraiMK07