Gaëlle Calvary Joëlle Coutaz David Thevenin A Unifying Reference Framework for the Development of Plastic User Interfaces. 173-192 2001 conf/ehci/2001 EHCI http://link.springer.de/link/service/series/0558/bibs/2254/22540173.htm db/conf/ehci/ehci2001.html#CalvaryCT01