✓

@Book{            AAVV:2018,
  Author        = "AAVV",
  Editor        = "Murlak, Filip",
  date-added    = "2020-04-10 11:07:26 +0200",
  date-modified = "2020-04-10 11:07:26 +0200",
  Title         = "200 Problems in Formal Languages and Automata Theory",
  Year          = "2017",
  File          = "book (1) - a - a.pdf"
}

@Book{ AAVV:2018, Author = "AAVV", Editor = "Murlak, Filip", date-added = "2020-04-10 11:07:26 +0200", date-modified = "2020-04-10 11:07:26 +0200", Title = "200 Problems in Formal Languages and Automata Theory", Year = "2017", File = "book (1) - a - a.pdf" }