Patrick W. Fowler, Arnout Ceulemans, Liviu F. Chibotaru. Eigenvalues of Hückel systems of equivalent points. Discrete Mathematics, 212(1-2):75-90, 2000. [doi]
@article{FowlerCC00,
title = {Eigenvalues of Hückel systems of equivalent points},
author = {Patrick W. Fowler and Arnout Ceulemans and Liviu F. Chibotaru},
year = {2000},
doi = {10.1016/S0012-365X(99)00210-1},
url = {http://dx.doi.org/10.1016/S0012-365X(99)00210-1},
researchr = {https://researchr.org/publication/FowlerCC00},
cites = {0},
citedby = {0},
journal = {Discrete Mathematics},
volume = {212},
number = {1-2},
pages = {75-90},
}