%0 Journal Article %A P. LANCASTER %A M.V. PATTABHIRAMAN %T Spectral Properties of a Polynomial Operator. %J Numerische Mathematik %D 1969 %P 247-259 %V 13 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1969__13_131916/ %F NUMA_1969__13_131916