John Tibbetts Carl Lentz Jeroen van Tyn Ward Cunningham The role of objects in a services-obsessed world. 1031-1033 2007 conf/oopsla/2007c OOPSLA Companion http://doi.acm.org/10.1145/1297846.1297974 db/conf/oopsla/oopsla2007c.html#TibbettsLTC07