@Article{         GinsburgSpanier:Semilinear:Presburger:PJM:1966,
  Author        = "Ginsburg, Seymour and Spanier, Edwin H.",
  date-added    = "2015-10-27 13:59:09 +0000",
  date-modified = "2017-10-30 16:57:09 +0000",
  fjournal      = "Pacific Journal of Mathematics",
  Journal       = "Pacific J. Math.",
  Keywords      = "semilinear sets",
  Number        = "2",
  Pages         = "285--296",
  Publisher     = "Pacific Journal of Mathematics, A Non-profit Corporation",
  Title         = "Semigroups, Presburger formulas, and languages",
  URL           = "http://projecteuclid.org/euclid.pjm/1102994974",
  Volume        = "16",
  Year          = "1966",
  bdsk-url-1    = "http://projecteuclid.org/euclid.pjm/1102994974",
  File          = "Semigroups, Presburger formulas, and languages. - Ginsburg, Spanier (0) (0) - a - a - t.pdf",
  file-2        = "Semigroups, Presburger formulas, and languages. - Ginsburg, Spanier (1) (0) - a - a - t.pdf",
  file-3        = "norrish (0) - a - a - t.pdf"
}

@Article{ GinsburgSpanier:Semilinear:Presburger:PJM:1966, Author = "Ginsburg, Seymour and Spanier, Edwin H.", date-added = "2015-10-27 13:59:09 +0000", date-modified = "2017-10-30 16:57:09 +0000", fjournal = "Pacific Journal of Mathematics", Journal = "Pacific J. Math.", Keywords = "semilinear sets", Number = "2", Pages = "285--296", Publisher = "Pacific Journal of Mathematics, A Non-profit Corporation", Title = "Semigroups, Presburger formulas, and languages", URL = "http://projecteuclid.org/euclid.pjm/1102994974", Volume = "16", Year = "1966", bdsk-url-1 = "http://projecteuclid.org/euclid.pjm/1102994974", File = "Semigroups, Presburger formulas, and languages. - Ginsburg, Spanier (0) (0) - a - a - t.pdf", file-2 = "Semigroups, Presburger formulas, and languages. - Ginsburg, Spanier (1) (0) - a - a - t.pdf", file-3 = "norrish (0) - a - a - t.pdf" }