@article{MZ_1983__183_173338,
     author = {Mehmet Orhon},
     title = {Boolean {Algebras} of {Commuting} {Projections.}},
     journal = {Mathematische Zeitschrift},
     pages = {531--538},
     year = {1983},
     volume = {183},
     zbl = {0498.47019},
     url = {http://geodesic.mathdoc.fr/item/MZ_1983__183_173338/}
}