@article{GDZPPN00242018X,
title = {Deficiency Indices of Singular Schr\"odinger Operators.},
journal = {Mathematische Zeitschrift},
volume = {162},
year = {1978},
pages = {87-98},
zbl = {0353.35033},
url = {http://dml.mathdoc.fr/item/GDZPPN00242018X}
}
Behncke, Horst; Focke, Heinz. Deficiency Indices of Singular Schrödinger Operators.. Mathematische Zeitschrift, Tome 162 (1978) pp. 87-98. http://gdmltest.u-ga.fr/item/GDZPPN00242018X/