@article{10_4153_CJM_2011_048_2,
     author = {Sherman, David},
     title = {On {Cardinal} {Invariants} and {Generators} for von {Neumann} {Algebras}},
     journal = {Canadian journal of mathematics},
     pages = {455--480},
     year = {2012},
     volume = {64},
     number = {2},
     doi = {10.4153/CJM-2011-048-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-2011-048-2/}
}