Seok-Hee Hong, Peter Eades, Aaron Quigley and Sang-Ho Lee, Drawing Algorithms for Series-Parallel Digraphs in Two and Three Dimensions, Proceedings of the 6th Symp. on Graph Drawing '98, Lecture Notes in Computer Science, Springer, Montreal, Canada, 1998.

In this paper we have introduced two algorithms for drawing series parallel digraphs. One constructs two dimensional drawings which display symmetries, the other constructs three dimensional drawings with a footprint of minimum size.