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@article{MS2_1970__26_166126, author = {Wilbert Wils}, title = {Direct {Integrals} of {Hilbert} {Spaces} {I.}}, journal = {Mathematica Scandinavica}, pages = {73--88}, publisher = {mathdoc}, volume = {26}, year = {1970}, zbl = {0194.43504}, url = {http://geodesic.mathdoc.fr/item/MS2_1970__26_166126/} }
Wilbert Wils. Direct Integrals of Hilbert Spaces I.. Mathematica Scandinavica, Tome 26 (1970), pp. 73-88. http://geodesic.mathdoc.fr/item/MS2_1970__26_166126/