Rohit Aggarwal Kunal Verma John A. Miller William Milnor Constraint Driven Web Service Composition in METEOR-S. 23-30 2004 conf/IEEEscc/2004 IEEE SCC http://csdl.computer.org/comp/proceedings/scc/2004/2225/00/22250023abs.htm db/conf/IEEEscc/scc2004.html#AggarwalVMM04