Kriengkrai Porkaew Sharad Mehrotra Michael Ortega Kaushik Chakrabarti Similarity Search Using Multiple Examples in MARS. 68-75 http://link.springer.de/link/service/series/0558/bibs/1614/16140068.htm 1999 conf/visual/1999 VISUAL db/conf/visual/visual99.html#PorkaewMOC99