I have now launched the Jaap Klapwijk pages on All of life redeemed.
Jaap studied under Vollenhoven and was professor of systematic philosophy at the VU-University, Amsterdam. He is the author of the recently published Purpose in the Living World? Cambridge University Press.
On-line are the following articles:
1991. Antithesis and Common Grace, in: J. Klapwijk , S. Griffioen and G. Groenewoud (eds.), Bringing into Captivity every Thought (Lanham: University Press of America, 1991), pp.169-190.
1991. Epilogue: The Idea of Transformational Philosophy, in: J. Klapwijk et al. (eds.), Bringing into Captivity every Thought (Lanham: University Press of America, 1991), pp.241-266.
1980. The Struggle for a Christian Philosophy/Dooyeweerd's Christian Philosophy: in: The Reformed Journal 30, 2/3 (1980), pp. 12-15; 20-24.