@Article{         thatcher:survey:73,
  Author        = "Thatcher, J. W.",
  date-added    = "2013-07-09 13:52:37 +0000",
  date-modified = "2013-07-09 13:52:37 +0000",
  masid         = "1279377",
  Title         = "{Tree automata: an informal survey}",
  Year          = "1973",
  File          = "Tree automata an informal survey - Thatcher (0) (0) - a - a - z.pdf"
}

@Article{ thatcher:survey:73, Author = "Thatcher, J. W.", date-added = "2013-07-09 13:52:37 +0000", date-modified = "2013-07-09 13:52:37 +0000", masid = "1279377", Title = "{Tree automata: an informal survey}", Year = "1973", File = "Tree automata an informal survey - Thatcher (0) (0) - a - a - z.pdf" }