@Article{         10.2307/2370324,
  Author        = "Post, Emil L.",
  date-added    = "2021-03-08 14:27:16 +0100",
  date-modified = "2021-03-08 14:27:16 +0100",
  ISSN          = "00029327, 10806377",
  Journal       = "American Journal of Mathematics",
  Number        = "3",
  Pages         = "163--185",
  Publisher     = "Johns Hopkins University Press",
  Title         = "Introduction to a General Theory of Elementary Propositions",
  URL           = "http://www.jstor.org/stable/2370324",
  Volume        = "43",
  Year          = "1921",
  bdsk-url-1    = "http://www.jstor.org/stable/2370324",
  File          = "Introduction to a General Theory of Elementary Propositions - 2370324 - n.pdf"
}

@Article{ 10.2307/2370324, Author = "Post, Emil L.", date-added = "2021-03-08 14:27:16 +0100", date-modified = "2021-03-08 14:27:16 +0100", ISSN = "00029327, 10806377", Journal = "American Journal of Mathematics", Number = "3", Pages = "163--185", Publisher = "Johns Hopkins University Press", Title = "Introduction to a General Theory of Elementary Propositions", URL = "http://www.jstor.org/stable/2370324", Volume = "43", Year = "1921", bdsk-url-1 = "http://www.jstor.org/stable/2370324", File = "Introduction to a General Theory of Elementary Propositions - 2370324 - n.pdf" }