Anupriya Ankolekar Frank Huch Katia P. Sycara Concurrent Semantics for the Web Services Specification Language DAML-S. 14-21 2002 conf/coordination/2002 COORDINATION http://link.springer.de/link/service/series/0558/bibs/2315/23150014.htm db/conf/coordination/coordination2002.html#AnkolekarHS02