✓

@Book{            book:579597,
  Author        = "Cassels, J. W. S.",
  date-added    = "2022-01-26 20:20:22 +0100",
  date-modified = "2022-01-26 20:20:22 +0100",
  Publisher     = "Cambridge University Press",
  Title         = "An introduction to diophantine approximation",
  URL           = "http://gen.lib.rus.ec/book/index.php?md5=0bcea2699e43bb1f33008c10e73c5556",
  Year          = "1957",
  bdsk-url-1    = "http://gen.lib.rus.ec/book/index.php?md5=0bcea2699e43bb1f33008c10e73c5556",
  File          = "An introduction to diophantine approximation by J.W.S. Cassels (z-lib.org) - j.djvu",
  file-2        = "An introduction to diophantine approximation by J.W.S. Cassels (z-lib.org) - j.pdf",
  file-3        = "An introduction to diophantine approximation by J. W. S Cassels (z-lib.org) - j.pdf"
}

@Book{ book:579597, Author = "Cassels, J. W. S.", date-added = "2022-01-26 20:20:22 +0100", date-modified = "2022-01-26 20:20:22 +0100", Publisher = "Cambridge University Press", Title = "An introduction to diophantine approximation", URL = "http://gen.lib.rus.ec/book/index.php?md5=0bcea2699e43bb1f33008c10e73c5556", Year = "1957", bdsk-url-1 = "http://gen.lib.rus.ec/book/index.php?md5=0bcea2699e43bb1f33008c10e73c5556", File = "An introduction to diophantine approximation by J.W.S. Cassels (z-lib.org) - j.djvu", file-2 = "An introduction to diophantine approximation by J.W.S. Cassels (z-lib.org) - j.pdf", file-3 = "An introduction to diophantine approximation by J. W. S Cassels (z-lib.org) - j.pdf" }