1. A group-theoretic method for drawing graphs symmetrically;Abelson,2002
2. The Knot Book;Adams,1994
3. The Design and Analysis of Computer Algorithms;Aho,1974
4. Groups and Symmetry;Armstrong,1988
5. How to draw a series parallel digraph;Bertolazzi;Internat. J. Comput. Geom. Appl,1994