Frank R. Schmidt Eno Töppe Daniel Cremers Yuri Boykov Intrinsic Mean for Semi-metrical Shape Retrieval Via Graph Cuts. 446-455 2007 conf/dagm/2007 DAGM-Symposium http://dx.doi.org/10.1007/978-3-540-74936-3_45 db/conf/dagm/dagm2007.html#SchmidtTCB07