@article{GDZPPN00116810X,
title = {Spectral Properties of a Polynomial Operator.},
journal = {Numerische Mathematik},
volume = {13},
year = {1969},
pages = {247-259},
zbl = {0177.17202},
url = {http://dml.mathdoc.fr/item/GDZPPN00116810X}
}
LANCASTER, P.; PATTABHIRAMAN, M.V. Spectral Properties of a Polynomial Operator.. Numerische Mathematik, Tome 13 (1969) pp. 247-259. http://gdmltest.u-ga.fr/item/GDZPPN00116810X/