1. Graphs and Hypergraphs;Berge,1976
2. Nonnegative Matrices in the Mathematical Sciences;Berman,1979
3. Graph Theory with Applications;Bondy,1976
4. Spectra of Graphs;Cvetković,1980
5. The largest eigenvalue of a graph: A survey;Cvetković;Linear and Multilinear Algebra,1990