@article{MZ_1972__125_171712,
     author = {Rainer W\"ust},
     title = {Holomorphic {Operator} {Families} and {Stability} of {Selfadjointness.}},
     journal = {Mathematische Zeitschrift},
     pages = {349--358},
     publisher = {mathdoc},
     volume = {125},
     year = {1972},
     zbl = {0255.47024},
     url = {http://geodesic.mathdoc.fr/item/MZ_1972__125_171712/}
}