Kar, E.A.M. van de (2004). Designing mobile information services; An Approach for Organisations in a Value Network. Doctoral dissertation. Delft University of Technology; Faculty of Technology, Policy and Management, Delft, The Netherlands. ISBN: 90-9018898-3.
More information and download options.

Kar, E.A.M. van de, and A. Verbraeck (2008). Designing Mobile Service Systems. Amsterdam: IOS Press.  ISBN 978-1-58603-778-9. [First edition appeared in 2007 and the second edition in 2008.]

Kar, E. A. M. van de (2013). “Het APSIT model, Op basis van beproefde technologie een nieuwe dienst in de markt zetten” In: Kwakman, F. en  Smeulders (red.). Groot Innovatie Modellenboek. ISBN: 978 90 8965 1037. pp 195-203.