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@article{MZ_1993__214_1_174572, author = {J. Weidmann and J. Brasche and H. Neidhardt}, title = {On the point spectrum of self-adjoint extensions.}, journal = {Mathematische Zeitschrift}, pages = {343--356}, publisher = {mathdoc}, volume = {214}, number = {1}, year = {1993}, zbl = {0791.47005}, url = {http://geodesic.mathdoc.fr/item/MZ_1993__214_1_174572/} }
J. Weidmann; J. Brasche; H. Neidhardt. On the point spectrum of self-adjoint extensions.. Mathematische Zeitschrift, Tome 214 (1993) no. 1, pp. 343-356. http://geodesic.mathdoc.fr/item/MZ_1993__214_1_174572/