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E. Estrada
发表
APPROXIMATING TOTAL PI -ELECTRON ENERGY IN TERMS OF SPECTRAL MOMENTS. A QUANTITATIVE APPROACH
Ivan Gutman, S. Markovic, A. Vesovic, 1998 .
Spectral Moments of the Edge Adjacency Matrix in Molecular Graphs. Part 3. Molecules Containing Cycles
E. Estrada, 1998 .