Voir la notice de l'article provenant de la source Hellenic Digital Mathematics Library
@article{EUG_1995__42_a5, author = {J. Maroulas and P. Psarrakos}, title = {The numerical {Range} of {Matrix} {Polynomials}}, journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Gamma} }, pages = {59-83}, publisher = {mathdoc}, volume = {42}, year = {1995}, language = {gr}, url = {http://geodesic.mathdoc.fr/item/EUG_1995__42_a5/} }
J. Maroulas; P. Psarrakos. The numerical Range of Matrix Polynomials. Ευκλείδης Γ , Tome 42 (1995), p. 59-83. http://geodesic.mathdoc.fr/item/EUG_1995__42_a5/