@Unpublished{     abdulla:piecewise,
  Author        = "Abdulla, Parosh Aziz and Atig, Mohamed Faouzi and Dave, Vrunda and Krishna, Shankara Narayanan",
  date-added    = "2019-07-26 17:21:21 +0200",
  date-modified = "2019-07-26 17:22:12 +0200",
  Title         = "Revisiting Piecewise Testable Separability",
  File          = "FSTTCS2019\_paper\_97 (0) - a - a - o.pdf"
}

@Unpublished{ abdulla:piecewise, Author = "Abdulla, Parosh Aziz and Atig, Mohamed Faouzi and Dave, Vrunda and Krishna, Shankara Narayanan", date-added = "2019-07-26 17:21:21 +0200", date-modified = "2019-07-26 17:22:12 +0200", Title = "Revisiting Piecewise Testable Separability", File = "FSTTCS2019_paper_97 (0) - a - a - o.pdf" }