2017, Article / Letter to editor (Filosofie: Kwartaalblad voor Informatie en Communicatie over Filosofie en Filosofieonderwijs, vol. 27, iss. 6, (2017), pp. 8-12)
2014, Part of book or chapter of book (Hense, E.H.; Jespers, F.P.M.; Nissen, P.J.A. (ed.), Present-Day Spiritualities. Contrasts and Overlaps, pp. 219-223)
2014, Part of book or chapter of book (Hense, E.H.; Jespers, F.P.M.; Nissen, P.J.A. (ed.), Present-Day Spiritualities. Overlaps and Contrasts, pp. IX-XI)
2013, Part of book or chapter of book (Groot, K. de; Pieper, J.; Putman, W. (ed.), Zelf zorgen voor je ziel: De actualiteit van christelijke spirituele centra, pp. 119-134)
2008, Part of book or chapter of book (Grube, D.-M.; Jonkers, P. (ed.), Religions Challenged by Contingency. Theological and Philosophical Approaches to the Problem of Contingency, pp. 47-66)
2005, Article in monograph or in proceedings (Bercken, W. van den; Sutton, J. (ed.), Aesthetics as a Religious Factor in Eastern and Western Christianity, pp. 209-225)
2002, Part of book or chapter of book (Bocken, I.; Jespers, F. (ed.), On Cultural Ontology - Religion, Philosophy and Culture. Essays in Honor of Wilhelm Dupré, pp. 113-130)