Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MM2_1970__3_154010, author = {Heinz-Dieter Niessen}, title = {Singul\"are {S-hermitische} {Rand-Eigenwertprobleme.}}, journal = {Manuscripta mathematica}, pages = {35--68}, publisher = {mathdoc}, volume = {3}, year = {1970}, language = {de}, url = {http://geodesic.mathdoc.fr/item/MM2_1970__3_154010/} }
Heinz-Dieter Niessen. Singuläre S-hermitische Rand-Eigenwertprobleme.. Manuscripta mathematica, Tome 3 (1970), pp. 35-68. http://geodesic.mathdoc.fr/item/MM2_1970__3_154010/