Journal article (2003) - J. Johannessen (author), G Balmino (author), P. Legrand (author), N. Sneeuw (author), F. Perosanz (author), M. Aguirre-Martinez (author), H. Rebhan (author), M.R. Drinkwater (author), C. Le Provost (author), R Rummel (author), R. Sabadini (author), H. Sunkel (author), C.C. Tscherning (author), P.N.A.M. Visser (author), P.L. Woodworth (author), C. W. Hughes (author)