@article{oai:shotoku.repo.nii.ac.jp:00000052,
 author = {ISIHARA, MAKOTO},
 issue = {1/2/3/4},
 journal = {Review of economics and information studies, Review of economics and information studies},
 month = {Mar},
 note = {This paper describes an attempt to improve estimation of bounds of orbital energies in the Huckel model. New expressions for handy estimation of the bounds are presented. The handy estimation uses only elementary graph-theoretical quantities as the number of sites and that of bonds. Furthermore, the expressoins are extended to enable us to estimate the bounds, in principle, as exactly as required. Numerical examples for typical π-electron systems are given to illustrate how the expressions work.},
 pages = {650--658},
 title = {ESTIMATION OF BOUNDS OF ORBITAL ENERGIES IN THE HUECKEL MODEL},
 volume = {3},
 year = {2003}
}