E. Michael Maximilien Ajith Ranabahu Roy Engehausen Laura C. Anderson Toward cloud-agnostic middlewares. 619-626 2009 OOPSLA Companion http://doi.acm.org/10.1145/1639950.1639957 conf/oopsla/2009c db/conf/oopsla/oopsla2009c.html#MaximilienREA09