John P. Eakins Margaret E. Graham Jago M. Boardman Evaluation of a Trademark Image Retrieval System. 1997 conf/ecir/1997 BCS-IRSG Annual Colloquium on IR Research http://ewic.bcs.org/conferences/1997/irsg/papers/paper1.htm db/conf/ecir/ecir1997.html#EakinsGB97