@article{MS2_1970__26_166127,
     author = {J. Vesterstrom and Wilbert Wils},
     title = {Direct {Integrals} of {Hilbert} {Spaces} {II.}},
     journal = {Mathematica Scandinavica},
     pages = {89--102},
     publisher = {mathdoc},
     volume = {26},
     year = {1970},
     zbl = {0207.44005},
     url = {http://geodesic.mathdoc.fr/item/MS2_1970__26_166127/}
}