@article{GDZPPN002215713, title = {Singul\"are S-hermitische Rand-Eigenwertprobleme.}, journal = {Manuscripta mathematica}, volume = {2}, year = {1970}, pages = {35-68}, language = {de}, url = {http://dml.mathdoc.fr/item/GDZPPN002215713} }
Niessen, Heinz-Dieter. Singuläre S-hermitische Rand-Eigenwertprobleme.. Manuscripta mathematica, Tome 2 (1970) pp. 35-68. http://gdmltest.u-ga.fr/item/GDZPPN002215713/