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@Book{HandookOfFormalLanguages:Vol1:1997,
  Author        = "AAVV",
  Editor        = "Rozenberg, Grzegorz and Salomaa, Arto",
  date-added    = "2020-04-10 11:07:26 +0200",
  date-modified = "2020-04-10 11:07:27 +0200",
  Publisher     = "Springer-Verlag Berlin Heidelberg",
  isbn          = {978-3-642-63863-3,978-3-642-59136-5,3642591361,3642638635},
  Title         = "Handbook of Formal Languages - Volume 1 - Word, Language, Grammar",
  Volume        = "1",
  Year          = "1997",
  File          = "Handbook of Formal Languages - Volume 1 - Word, Language, Grammar - AAVV (0) (0) - a - a.pdf"
}

@Book{HandookOfFormalLanguages:Vol1:1997, Author = "AAVV", Editor = "Rozenberg, Grzegorz and Salomaa, Arto", date-added = "2020-04-10 11:07:26 +0200", date-modified = "2020-04-10 11:07:27 +0200", Publisher = "Springer-Verlag Berlin Heidelberg", isbn = {978-3-642-63863-3,978-3-642-59136-5,3642591361,3642638635}, Title = "Handbook of Formal Languages - Volume 1 - Word, Language, Grammar", Volume = "1", Year = "1997", File = "Handbook of Formal Languages - Volume 1 - Word, Language, Grammar - AAVV (0) (0) - a - a.pdf" }