2010. K. P. Companje, R.H.M. Hendriks, K.F.E. Veraghtert en B.E.M. Widdershoven, Two Centuries of Solidarity. German, Belgian and Dutch Social Health Insurance 1770-2008. TSEG - The Low Countries Journal of Social and Economic History. 7, 4 (Dec. 2010), 91–92. DOI:https://doi.org/10.18352/tseg.411.