2005, Article in monograph or in proceedings (A. Middeldorp, V. Oostrom van; Raamsdonk, F. van (ed.), Processes, Terms and Cycles: Steps on the Road to Infinity/, Essays Dedicated to Jan Willem Klop on the Occasion of His 60th Birthday, pp. 40-54)
2010, Article / Letter to editor (Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 620, iss. 2-3, (2010), pp. 490-517)