@article{Wang:1963,
    Author = {Wang, Hao},
    File = {Tag systems and lag systems - Wang (0) (0) - a - a - a.pdf},
    ISSN = {0025-5831},
    Journal = {Mathematische Annalen},
    Language = {English},
    Number = {1},
    Pages = {65-74},
    Publisher = {Springer-Verlag},
    Title = {Tag systems and lag systems},
    URL = {http://dx.doi.org/10.1007/BF01343730},
    Volume = {152},
    Year = {1963},
    bdsk-url-1 = {http://dx.doi.org/10.1007/BF01343730},
    date-added = {2014-06-23 20:41:02 +0000},
    date-modified = {2014-06-24 08:17:53 +0000},
    doi = {10.1007/BF01343730}
}

@article{Wang:1963, Author = {Wang, Hao}, File = {Tag systems and lag systems - Wang (0) (0) - a - a - a.pdf}, ISSN = {0025-5831}, Journal = {Mathematische Annalen}, Language = {English}, Number = {1}, Pages = {65-74}, Publisher = {Springer-Verlag}, Title = {Tag systems and lag systems}, URL = {http://dx.doi.org/10.1007/BF01343730}, Volume = {152}, Year = {1963}, bdsk-url-1 = {http://dx.doi.org/10.1007/BF01343730}, date-added = {2014-06-23 20:41:02 +0000}, date-modified = {2014-06-24 08:17:53 +0000}, doi = {10.1007/BF01343730} }