[1]
D. Oude Nijhuis, “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, vol. 7, no. 4, pp. 91–92, Dec. 2010.