Geologie en mijnbouw, Mar. 2000: verso of t.p. (Netherlands Journal of Geosciences' Foundation) p. 1 ("... a foundation established jointly by the KNGMG [Koninklijk Nederlands Geologisch Mijnbouwkundig Genootschap] and NITG-TNO [Nederlands Instituut voor Toegepaste Geowetenschappen TNO]. The foundation (Stichting Netherlands Journal of Geosciences) is a joint venture (50% both).")

Letter from the Foundation, Feb. 29, 2000: Letterhead (Stichting Netherlands Journal of Geosciences)