Dipanjan Chakraborty 0001 Filip Perich Anupam Joshi Timothy W. Finin Yelena Yesha A Reactive Service Composition Architecture for Pervasive Computing Environments. 53-62 2002 conf/ifip6-8/2002 PWC db/conf/ifip6-8/ifip6-8-2002.html#ChakrabortyPJFY02