@article{MZ_1976__152_172471,
     author = {Rainer W\"ust},
     title = {Dirac {Operations} with {Strongly} {Singular} {Potentials.} {Distinguished} {Self-Adjoint} {Extensions} {Constructed} with a {Spectral} {Gap} {Theorem} and {Cut-Off-Potentials.}},
     journal = {Mathematische Zeitschrift},
     pages = {259--272},
     publisher = {mathdoc},
     volume = {152},
     year = {1976},
     zbl = {0361.35051},
     url = {http://geodesic.mathdoc.fr/item/MZ_1976__152_172471/}
}