1. Circuits and trees in ordered linear graphs;van Aardenne-Ehrenfest;Simon Steven,1951
2. Some properties of fixed-free codes;Ahlswede,1996
3. Spans of preference functions for de Bruijn sequences;Alhakim;Discrete Appl. Math.,2012
4. A multiple stream generator based on de Bruijn digraph homomorphisms;Alhakim;J. Stat. Comput. Simul.,2009
5. Number Theory;Andrews,1971