Jaap Gordijn Sybren de Kinderen Vincent Pijpers Hans Akkermans e-Services in a Networked World: From Semantics to Pragmatics. 44-57 2008 FIS http://dx.doi.org/10.1007/978-3-642-00985-3_4 conf/fis/2008 db/conf/fis/fis2008.html#GordijnKPA08