@Manual{          Till,
  Author        = "Tantau, Till",
  date-added    = "2014-01-13 15:30:12 +0000",
  date-modified = "2014-01-13 15:31:00 +0000",
  Title         = "TikZ \& PGF - Manual for Version 2.10",
  Year          = "2007",
  File          = "pgfmanual - a - a - o.pdf",
  file-2        = "TikZ \& PGF - Manual for Version 2.10 - Till (0) (0) - a - a - o.pdf"
}

@Manual{ Till, Author = "Tantau, Till", date-added = "2014-01-13 15:30:12 +0000", date-modified = "2014-01-13 15:31:00 +0000", Title = "TikZ \& PGF - Manual for Version 2.10", Year = "2007", File = "pgfmanual - a - a - o.pdf", file-2 = "TikZ \& PGF - Manual for Version 2.10 - Till (0) (0) - a - a - o.pdf" }