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@article{MS2_1979__44_166639, author = {Christian F. Skau}, title = {Positive self-adjoint extensions of operators affiliated with a von {Neumann} algebra.}, journal = {Mathematica Scandinavica}, pages = {171--195}, publisher = {mathdoc}, volume = {44}, year = {1979}, zbl = {0414.46041}, url = {http://geodesic.mathdoc.fr/item/MS2_1979__44_166639/} }
Christian F. Skau. Positive self-adjoint extensions of operators affiliated with a von Neumann algebra.. Mathematica Scandinavica, Tome 44 (1979), pp. 171-195. http://geodesic.mathdoc.fr/item/MS2_1979__44_166639/