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Some possible directions in further investigations of graph spectra. (English) Zbl 0471.05043
Algebraic methods in graph theory, Vol. I, Conf. Szeged 1978, Colloq. Math. Soc. Janos Bolyai 25, 47-67 (1981).

05C50 Graphs and linear algebra (matrices, eigenvalues, etc.)
05-02 Research exposition (monographs, survey articles) pertaining to combinatorics
05C75 Structural characterization of families of graphs