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