a reference to a book written by Labour Party Prime Minister Joop den Uyl in Halsema, F., “Vrijzinnig Links”Archived 6 February 2007 at archive.today in De Helling 15:2 (2004) (in Dutch; "Free-thinking Left")
[4], Centraal Bureau Genealogie, collectie Familieadvertenties (Central Bureau for Genealogy, collection family-advertisements) on C.N. Fles and T. Korbee, at Hilligersberg.
a reference to a book written by Labour Party Prime Minister Joop den Uyl in Halsema, F., “Vrijzinnig Links”Archived 6 February 2007 at archive.today in De Helling 15:2 (2004) (in Dutch; "Free-thinking Left")
delpher.nl
[3], born 22 December 1941 at Driehuis-Velsen Olga Margaretha Bertha Fles, daughter of C.N. Fles and T. Korbee, Rotterdams Nieuwsblad 23 December 1941.
a reference to the GroenLinks declaration of principles made by Halsema in Halsema, F. "Van Angstpolitiek naar Kanspolitiek"Archived 24 July 2011 at the Wayback Machine (6 September 2006) (in Dutch; "From the Politics of Fear to the Politics of Chance")
wetenschappelijkbureau.groenlinks.nl
Halsema, F., Vrijheid Eerlijk Delen ("Sharing Liberty Fairly") can be obtained "Archived: Vrijheid Eerlijk Delen" [Sharing Liberty Fairly] (PDF). Archived from the original(PDF) on 28 July 2014. Retrieved 28 July 2014. (in Dutch)
[8], Hans Blom, David Wertheim, Hetty Berg en Bart Wallet (eds.): "Geschiedenis van de Joden in Nederland" (completely revised edition; Balans, Amsterdam 2017); review by Jonet 17 June 2020.
[9], Bart Wallet on Jonet dd 11 July 2018 / 22 January 2020 "Why Femke Halsema is not Jewish after all".
„Ik kan heel venijnig zijn”, Reformatorisch Dagblad, 15 November 2002 (interview). "Mijn moeder heet Fles, dat is een Joodse naam uit Twente en de Achterhoek. Waarschijnlijk zijn mijn voorouders geassimileerde Joden. De broers van mijn opa heetten Abraham en Izaäk, kleermakers te Rotterdam."
a reference to the GroenLinks declaration of principles made by Halsema in Halsema, F. "Van Angstpolitiek naar Kanspolitiek"Archived 24 July 2011 at the Wayback Machine (6 September 2006) (in Dutch; "From the Politics of Fear to the Politics of Chance")
Halsema, F., Vrijheid Eerlijk Delen ("Sharing Liberty Fairly") can be obtained "Archived: Vrijheid Eerlijk Delen" [Sharing Liberty Fairly] (PDF). Archived from the original(PDF) on 28 July 2014. Retrieved 28 July 2014. (in Dutch)
