Authors: W H Bakun; B Aagaard; B Dost; W L Ellsworth; J L Hardebeck; R A Harris; C Ji; M J S Johnston; J Langbein; J J Lienkaemper; A J Michael; J R Murray; R M Nadeau; P A Reasenberg; M S Reichle; E A Roeloffs; A Shakal; R W Simpson; F Waldhauser Journal: Nature Date: 2005-10-13 Impact factor: 49.962