A. Kerkhoff, “K.P. Companje, Convergerende belangen. Belangenbehartiging van de zorgverzekeraars in historisch perspectief 1900-2001; K. Horstman, Public bodies, private lives. The historical construction of life insurance, health risks, and citizenship in the Netherlands 1880-1920”, BMGN-LCHR, vol. 118, no. 3, pp. 423–425, Jan. 2003, doi: 10.18352/bmgn-lchr.5924.