Dimitrios Skoutas Dimitris Sacharidis Alkis Simitsis Verena Kantere Timos K. Sellis Top-<i>k</i> dominant web services under multi-criteria matching. 898-909 2009 EDBT http://doi.acm.org/10.1145/1516360.1516463 conf/edbt/2009 db/conf/edbt/edbt2009.html#SkoutasSSKS09