Journal article (2002) - J P Omtvedt (author), J Alstad (author), U W Kirbach (author), D M Lee (author), M Mendel (author), A Nahler (author), V Ninov (author), L A Omtvedt (author), J B Patin (author), G Skarnemark (author), L Stavsetra (author), R Sudowe (author), H Breivik (author), N Wiehl (author), B Wierczinski (author), P A Wilk (author), P M Zielinski (author), J V Kratz (author), N Trautmann (author), H Nitsche (author), D C Hoffman (author), J E Dyve (author), K Eberhardt (author), C M Folden III (author), T Ginter (author), K E Gregorich (author), E A Hult (author), M Johansson (author)