@Unpublished{     Yamasaki,
  Author        = "Yamasaki, Hideki",
  date-added    = "2012-03-07 16:58:18 +0100",
  date-modified = "2012-03-07 16:58:55 +0100",
  Keywords      = "syntactic congruence",
  Month         = "March",
  Title         = "Right congruences for omega-regular languages",
  Year          = "1995",
  File          = "Right congruences for omega-regular languages - Yamasaki (0) (0) - a - a - q.pdf"
}

@Unpublished{ Yamasaki, Author = "Yamasaki, Hideki", date-added = "2012-03-07 16:58:18 +0100", date-modified = "2012-03-07 16:58:55 +0100", Keywords = "syntactic congruence", Month = "March", Title = "Right congruences for omega-regular languages", Year = "1995", File = "Right congruences for omega-regular languages - Yamasaki (0) (0) - a - a - q.pdf" }