1. Spectra of Graphs;Brouwer,2012
2. Variable neighborhood search for extremal graphs. 2. Finding graphs with extremal energy;Caporossi;J. Chem. Inf. Comput. Sci.,1999
3. Spectra of Graphs, Theory and Application;Cvetković,1979
4. An Introduction to the Theory of Graph Spectra;Cvetković,2010
5. On the spread of outerplanar graphs;Gotshall;Spec. Matrices,2022