Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{ELMA_1970__25_140971, author = {Erwin Kreyszig}, title = {Ein {Satz} \"uber {Matrixeigenwerte.}}, journal = {Elemente der Mathematik}, pages = {60--61}, publisher = {mathdoc}, volume = {25}, year = {1970}, zbl = {0205.04803}, url = {http://geodesic.mathdoc.fr/item/ELMA_1970__25_140971/} }
Erwin Kreyszig. Ein Satz über Matrixeigenwerte.. Elemente der Mathematik, Tome 25 (1970), pp. 60-61. http://geodesic.mathdoc.fr/item/ELMA_1970__25_140971/