Journal article (2011) - J.C. van Oven (author), F. Berwald (author), F Berwald (author), K.K. Berggren (author), Pieter Kruit (author), P Kruit (author), P. Kruit (author), C. W. Hagen (author), Kees C.W. Hagen (author), Cornelis Wouter Hagen (author), Cornelis W. Hagen (author), C.W. Hagen (author), Kees Hagen (author), CW Hagen (author)