@article{10_4153_CJM_1985_043_9,
     author = {Quigg, John C.},
     title = {Approximately {Periodic} {Functionals} on {C*-Algebras} and von {Neumann} {Algebras}},
     journal = {Canadian journal of mathematics},
     pages = {769--784},
     year = {1985},
     volume = {37},
     number = {5},
     doi = {10.4153/CJM-1985-043-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1985-043-9/}
}