Cornerstones of undecidability

cover

@Book{            book:1483319,
  Author        = "Rozenberg, Grzegorz and Salomaa, Arto",
  date-added    = "2021-03-06 10:18:40 +0100",
  date-modified = "2021-03-06 10:18:40 +0100",
  ISBN          = "0-13-297425-8",
  Publisher     = "Prentice-Hall, Inc.",
  Title         = "Cornerstones of undecidability",
  URL           = "http://gen.lib.rus.ec/book/index.php?md5=1c078ab95cb95bed327229252067a888",
  Year          = "1994",
  bdsk-url-1    = "http://gen.lib.rus.ec/book/index.php?md5=1c078ab95cb95bed327229252067a888",
  File          = "Grzegorz Rozenberg and Arto Salomaa - Cornerstones of undecidability (1994, Prentice-Hall, Inc.) - libgen.lc - n.pdf"
}

@Book{ book:1483319, Author = "Rozenberg, Grzegorz and Salomaa, Arto", date-added = "2021-03-06 10:18:40 +0100", date-modified = "2021-03-06 10:18:40 +0100", ISBN = "0-13-297425-8", Publisher = "Prentice-Hall, Inc.", Title = "Cornerstones of undecidability", URL = "http://gen.lib.rus.ec/book/index.php?md5=1c078ab95cb95bed327229252067a888", Year = "1994", bdsk-url-1 = "http://gen.lib.rus.ec/book/index.php?md5=1c078ab95cb95bed327229252067a888", File = "Grzegorz Rozenberg and Arto Salomaa - Cornerstones of undecidability (1994, Prentice-Hall, Inc.) - libgen.lc - n.pdf" }