@article{GDZPPN002539918,
title = {Eigenvalues of nonsingular matices and combinatorial applications},
journal = {Revista colombiana de matematicas},
volume = {10},
year = {1976},
pages = {121-124},
zbl = {0354.05018},
url = {http://dml.mathdoc.fr/item/GDZPPN002539918}
}
Marrero, Osvaldo. Eigenvalues of nonsingular matices and combinatorial applications. Revista colombiana de matematicas, Tome 10 (1976) pp. 121-124. http://gdmltest.u-ga.fr/item/GDZPPN002539918/