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@Book{            book:3044821,
  Author        = "Birkhoff, Garrett and Rota, Gian-Carlo",
  date-added    = "2023-02-03 14:04:57 +0100",
  date-modified = "2023-02-03 14:05:24 +0100",
  Edition       = "4",
  ISBN          = "0471860034,9780471860037",
  Publisher     = "Wiley",
  Title         = "Ordinary differential equations",
  URL           = "http://gen.lib.rus.ec/book/index.php?md5=DED1DE5E88A82DB1CF54A6CCF38E86F5",
  Year          = "1989",
  bdsk-url-1    = "http://gen.lib.rus.ec/book/index.php?md5=DED1DE5E88A82DB1CF54A6CCF38E86F5",
  File          = "Garrett Birkhoff, Gian-Carlo Rota - Ordinary differential equations-Wiley (1989).pdf"
}

@Book{ book:3044821, Author = "Birkhoff, Garrett and Rota, Gian-Carlo", date-added = "2023-02-03 14:04:57 +0100", date-modified = "2023-02-03 14:05:24 +0100", Edition = "4", ISBN = "0471860034,9780471860037", Publisher = "Wiley", Title = "Ordinary differential equations", URL = "http://gen.lib.rus.ec/book/index.php?md5=DED1DE5E88A82DB1CF54A6CCF38E86F5", Year = "1989", bdsk-url-1 = "http://gen.lib.rus.ec/book/index.php?md5=DED1DE5E88A82DB1CF54A6CCF38E86F5", File = "Garrett Birkhoff, Gian-Carlo Rota - Ordinary differential equations-Wiley (1989).pdf" }