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@Book{Kaplansky:DA:1957,
  Author        = "Kaplansky, Irving",
  date-added    = "2020-10-18 12:44:28 +0200",
  date-modified = "2020-10-18 12:44:28 +0200",
  Edition       = "1st",
  Publisher     = "Hermann",
  Series        = "Actualites Scientifiques Et Industrielles, 1251",
  Title         = "An Introduction to Differential Algebra",
  URL           = "http://gen.lib.rus.ec/book/index.php?md5=1c976e63d66de5578f6a50de4b420b16",
  Year          = "1957",
  bdsk-url-1    = "http://gen.lib.rus.ec/book/index.php?md5=1c976e63d66de5578f6a50de4b420b16",
  File          = "An Introduction to Differential Algebra by Irving Kaplansky (z-lib.org) - a.djvu",
  file-2        = "An Introduction to Differential Algebra by Irving Kaplansky (z-lib.org) - a.pdf"
}

@Book{Kaplansky:DA:1957, Author = "Kaplansky, Irving", date-added = "2020-10-18 12:44:28 +0200", date-modified = "2020-10-18 12:44:28 +0200", Edition = "1st", Publisher = "Hermann", Series = "Actualites Scientifiques Et Industrielles, 1251", Title = "An Introduction to Differential Algebra", URL = "http://gen.lib.rus.ec/book/index.php?md5=1c976e63d66de5578f6a50de4b420b16", Year = "1957", bdsk-url-1 = "http://gen.lib.rus.ec/book/index.php?md5=1c976e63d66de5578f6a50de4b420b16", File = "An Introduction to Differential Algebra by Irving Kaplansky (z-lib.org) - a.djvu", file-2 = "An Introduction to Differential Algebra by Irving Kaplansky (z-lib.org) - a.pdf" }