Bernhard Braunmüller Martin Ester Hans-Peter Kriegel Jörg Sander Multiple Similarity Queries: A Basic DBMS Operation for Mining in Metric Databases. 79-95 2001 13 IEEE Trans. Knowl. Data Eng. 1 http://www.computer.org/tkde/tk2001/k0079abs.htm db/journals/tkde/tkde13.html#BraunmullerEKS01