1. N. (ed) Encounters in Magnetic Resonances. World Scientific, Singapore, 1996
2. Interview HA Klomp with JA Goedkoop, 11 February 1997. In: FOM and Dutch physics after the Second World War. An ‘oral history’. Stichting FOM, Nieuwegein, 1998
3. Interview HA Klomp with J Kistemaker, 26 February 1997. In: FOM and Dutch physics after the Second World War. An ‘oral history’. Stichting FOM, Nieuwegein, 1998
4. Boumans AA. Fifty years of the FOM. In: FOM and Dutch physics after the Second World War. An ‘oral history’. Stichting FOM, Nieuwegein, 1998
5. Interview HA Klomp with PM Endt, 3 February 1997. In: FOM and Dutch physics after the Second World War. An ‘oral history’. Stichting FOM, Nieuwegein, 1998