Cesare Pautasso Stefan Tai E. Michael Maximilien Third international workshop on web APIs and services Mashups (Mashups'09). 695-696 2009 OOPSLA Companion http://doi.acm.org/10.1145/1639950.1639969 conf/oopsla/2009c db/conf/oopsla/oopsla2009c.html#PautassoTM09