Benjamin Blau Dirk Neumann Christof Weinhardt Steffen Lamparter Planning and Pricing of Service Mashups. 19-26 2008 CEC/EEE http://dx.doi.org/10.1109/CECandEEE.2008.94 conf/wecwis/2008 db/conf/wecwis/cec2008.html#BlauNWL08