Uffe Kock Wiil Peter J. Nürnberg David L. Hicks Structural computing: research directions, systems and issues. 3-9 2003 26 J. Network and Computer Applications 1 http://dx.doi.org/10.1016/S1084-8045(02)00056-5 db/journals/jnca/jnca26.html#WiilNH03