M. Bekos, T. van Dijk, P. Kindermann, and A. Wolff. Proc. 9th Int. Workshop Algorithms Comput. (WALCOM'15), volume 8973 of Lecture Notes in Computer Science, page 222--233. Springer-Verlag, (2015)
M. Bekos, M. Kaufmann, A. Symvonis, and A. Wolff. Proc. 12th Int. Sympos. Graph Drawing (GD'04), volume 3383 of Lecture Notes in Computer Science, page 49--59. Springer-Verlag, (2005)