J. Joseph Fowler. Characterization of Unlabeled Radial Level Planar Graphs. In David Eppstein, Emden R. Gansner, editors, Graph Drawing, 17th International Symposium, GD 2009, Chicago, IL, USA, September 22-25, 2009. Revised Papers. Volume 5849 of Lecture Notes in Computer Science, pages 81-93, Springer, 2009. [doi]
Abstract is missing.