@Unpublished{     dejongh,
  Author        = "de Jongh, Dick",
  date-added    = "2020-09-14 09:57:15 +0200",
  date-modified = "2020-09-14 09:57:37 +0200",
  Title         = "The Disjunction Property according to Kreisel and Putnam",
  File          = "The Disjunction Property according to Kreisel and Putnam - KPSCottGdeJ-1 - a - w.pdf"
}

@Unpublished{ dejongh, Author = "de Jongh, Dick", date-added = "2020-09-14 09:57:15 +0200", date-modified = "2020-09-14 09:57:37 +0200", Title = "The Disjunction Property according to Kreisel and Putnam", File = "The Disjunction Property according to Kreisel and Putnam - KPSCottGdeJ-1 - a - w.pdf" }