@Article{         Kolchin:Basis:1942,
  Author        = "Kolchin, E. R.",
  date-added    = "2020-04-09 14:31:19 +0200",
  date-modified = "2020-04-09 14:31:19 +0200",
  ISSN          = "00029947",
  Journal       = "Transactions of the American Mathematical Society",
  Number        = "1",
  Pages         = "115--127",
  Publisher     = "American Mathematical Society",
  Title         = "On the Basis Theorem for Differential Systems",
  URL           = "http://www.jstor.org/stable/1990156",
  Volume        = "52",
  Year          = "1942",
  bdsk-url-1    = "http://www.jstor.org/stable/1990156",
  File          = "On the Basis Theorem for Differential Systems - kolchin1942 - a - a - a - a - v.pdf"
}

@Article{ Kolchin:Basis:1942, Author = "Kolchin, E. R.", date-added = "2020-04-09 14:31:19 +0200", date-modified = "2020-04-09 14:31:19 +0200", ISSN = "00029947", Journal = "Transactions of the American Mathematical Society", Number = "1", Pages = "115--127", Publisher = "American Mathematical Society", Title = "On the Basis Theorem for Differential Systems", URL = "http://www.jstor.org/stable/1990156", Volume = "52", Year = "1942", bdsk-url-1 = "http://www.jstor.org/stable/1990156", File = "On the Basis Theorem for Differential Systems - kolchin1942 - a - a - a - a - v.pdf" }