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3. Spectra of graphs—Theory and Application;Cvetković,1995
4. Conjugated molecules having integral graph spectra;Cvetković;Chem. Phys. Lett.,1974
5. D. Cvetković, P. Rowlinson, S. Simić, Spectral generalizations of line graphs—On Line Graphs with Least Eigenvalue -2, London Mathematical Society, Lecture Notes Series Vol. 314, Cambridge University Press, Cambridge, 2004.