1. Symbolic psycho-logic: A model of attitudinal cognition;Abelson;Behavioral Sci.,1958
2. Algebraic Graph Theory;Biggs,1974
3. On the Foundations of Combinatorial Theory: Combinatorial Geometries;Crapo,1968
4. A geometric interpretation of the least eigenvalue of a line graph;Doob,1970
5. An interrelation between line graphs, eigenvalues, and matroids;Doob;J. Combinatorial Theory (Ser. B),1973