Paola Bertolazzi, Giuseppe Di Battista, Walter Didimo. Quasi-Upward Planarity. In Sue Whitesides, editor, Graph Drawing, 6th International Symposium, GD 98, Montréal, Canada, August 1998, Proceedings. Volume 1547 of Lecture Notes in Computer Science, pages 15-29, Springer, 1998. [doi]
Abstract is missing.