Journal article (2004) - AL Porter (author), P.A. van der Duin (author), H. Linstone (author), V.A.W.J. Marchau (author), G. Massari (author), I. Miles (author), M. Mogee (author), A. Salo (author), F. Scapolo (author), R. Smits (author), W.A.H. Thissen (author), Wil Thissen (author), W.B. Ashton (author), G. Clar (author), J.F. Coates (author), K. Cuhls (author), S. Cunningham (author), K. Ducatel (author), L. Georgehiou (author), T. Gordon (author)

Conference paper (2004) - P.A. van der Duin (author), A.L Porter (author), H. Linstone (author), V. Marchau (author), G. Massari (author), I. Miles (author), M. Mogee (author), A. Salo (author), F. Scapolo (author), R. Smits (author), Wil Thissen (author), W.A.H. Thissen (author), W. Bradford Ashton (author), G. Clar (author), J.F. Coates (author), K. Cuhls (author), S.W. Cunningham (author), K. Ducatel (author), L. Georgehiou (author), T. Gordon (author)