I
http://academic.research.microsoft.com/Author/2273311/siegfried-selberherr
have never published anything together with Sigurd Wagner, Princeton University:
http://academic.research.microsoft.com/VisualExplorer#2273311
It should be Stephan Wagner instead. There exist several people with the name
Stephan Wagner and their publications are entirely mixed up. Look at first
simply at their affiliations for cleaning up.
In addition, A.U.Gehring, who is Andreas Gehring, shows up twice and once on my co-author graph.