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@Book{            book:905803,
  Author        = "Cheng, S S",
  date-added    = "2020-09-14 15:48:57 +0200",
  date-modified = "2020-09-14 15:48:57 +0200",
  ISBN          = "0415298849,9780415298841",
  Publisher     = "Taylor \& Francis",
  Series        = "Advances in discrete mathematics and applications, v. 3",
  Title         = "Partial difference equations",
  URL           = "http://gen.lib.rus.ec/book/index.php?md5=95abd7d9eb6d0bfddd2638e7a9f72ae4",
  Year          = "2003",
  bdsk-url-1    = "http://gen.lib.rus.ec/book/index.php?md5=95abd7d9eb6d0bfddd2638e7a9f72ae4",
  File          = "Partial difference equations by S S Cheng (z-lib.org) - a.pdf"
}

@Book{ book:905803, Author = "Cheng, S S", date-added = "2020-09-14 15:48:57 +0200", date-modified = "2020-09-14 15:48:57 +0200", ISBN = "0415298849,9780415298841", Publisher = "Taylor \& Francis", Series = "Advances in discrete mathematics and applications, v. 3", Title = "Partial difference equations", URL = "http://gen.lib.rus.ec/book/index.php?md5=95abd7d9eb6d0bfddd2638e7a9f72ae4", Year = "2003", bdsk-url-1 = "http://gen.lib.rus.ec/book/index.php?md5=95abd7d9eb6d0bfddd2638e7a9f72ae4", File = "Partial difference equations by S S Cheng (z-lib.org) - a.pdf" }