Rui Zhang 0003 Nick Koudas Beng Chin Ooi Divesh Srivastava Multiple Aggregations Over Data Streams. 2005 conf/sigmod/2005 SIGMOD Conference db/conf/sigmod/sigmod2005.html#SrivastavaKZO05 299-310 http://doi.acm.org/10.1145/1066157.1066192