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Spectra of Graphs. Academic Press, New York, 1979.
MR 0572262
[3] M. Fiedler:
Eigenvalues of acyclic matrices. Czech. Math. J. 25 {100), 1975, 607-618.
MR 0387308
[4] M. Fiedler:
A property of eigenvectors of nonnegative symmetric matrices and its application to graph theory. Czech. Math. J. 25 (100), 1975, 619-633.
MR 0387321 |
Zbl 0437.15004