Giuseppe Di Battista, Giuseppe Liotta, Francesco Vargiu. Spirality of Orthogonal Representations and Optimal Drawings of Series-Parallel Graphs and 3-Planar Graphs (Extended Abstract). In Frank K. H. A. Dehne, Jörg-Rüdiger Sack, Nicola Santoro, Sue Whitesides, editors, Algorithms and Data Structures, Third Workshop, WADS 93, Montréal, Canada, August 11-13, 1993, Proceedings. Volume 709 of Lecture Notes in Computer Science, pages 151-162, Springer, 1993.
Abstract is missing.