Conference paper (2009) - MC Feiters (author), W Meyer-Klaucke (author), LE Bevers (author), Peter-Leon Hagedoorn (author), PL Hagedoorn (author), P.L. Hagedoorn (author), Peter Leon Hagedoorn (author), Peter L. Hagedoorn (author), WR Hagen (author), Wilfred R. Hagen (author), Fred Hagen (author), W.R. Hagen (author), AV Kostenko (author), AV Soldatov (author), C Leblanc (author), G Michel (author), P Potin (author), FC Kuepper (author), K Hollenstein (author), KP Locher (author)