David Thau Shawn Bowers Bertram Ludäscher Merging taxonomies under RCC-5 algebraic articulations. 47-54 2008 ONISW http://doi.acm.org/10.1145/1458484.1458492 conf/cikm/2008onisw db/conf/cikm/onisw2008.html#ThauBL08