Conference paper (2009) - AM Baryshev (author), FP Mena (author), CFJ Lodewijk (author), D. Ludkov (author), T Zijlstra (author), E. van Zeijl (author), T.M. Klapwijk (author), W Wild (author), J Adema (author), R Hesper (author), B. Jackson (author), G Gerlofsma (author), M Bekema (author), K Keizer (author), H Schaeffer (author), J Barkhof (author)