Olga Papaemmanouil Ugur Çetintemel John Jannotti Supporting Generic Cost Models for Wide-Area Stream Processing. 1084-1095 2009 ICDE http://dx.doi.org/10.1109/ICDE.2009.11 conf/icde/2009 db/conf/icde/icde2009.html#PapaemmanouilCJ09