1. Digraphs: Theory, Algorithms and Applications;Bang-Jensen,2007
2. The Theory of Graphs and its Applications;Berge,1962
3. Statistical issues in the analysis of dominance hierarchies in animal societies;Iverson;Journal of Quantitative Anthropology,1990
4. Graph theoretical dimensions of informal organizations;Krackhardt,1994
5. Informal networks and organizational crises: an experimental simulation;Krackhardt;Social Psychology Quarterly,1988