A Visibility Representation for Graphs in Three Dimensions.
Prosenjit BoseHazel EverettSándor P. FeketeMichael E. HouleAnna LubiwHenk MeijerKathleen RomanikGünter RoteThomas C. ShermerSue WhitesidesChristian ZellePublished in: J. Graph Algorithms Appl. (1998)