@article{MAN_1930__102_159384,
     author = {J. von Neumann},
     title = {Zur {Algebra} der {Funktionaloperationen} und {Theorie} der normalen {Operatoren}},
     journal = {Mathematische Annalen},
     pages = {370--427},
     publisher = {mathdoc},
     volume = {102},
     year = {1930},
     zbl = {55.0825.02},
     url = {http://geodesic.mathdoc.fr/item/MAN_1930__102_159384/}
}