A Visibility Representation for Graphs in Three Dimensions. - Prosenjit Bose; Hazel Everett; Sándor P. Fekete; Michael E. Houle; Anna Lubiw; Henk Meijer; Kathleen Romanik; Günter Rote; Thomas C. Shermer; Sue Whitesides; Christian Zelle (J. Graph Algorithms Appl., 1998)