Journal article (2003) - M Schmid (author), K Walsh (author), JS Sinninghe Damste (author), J Harris (author), P Shaw (author), M.S.M. Jetten (author), M Strous (author), RI Webb (author), WIC Rijpstra (author), K van de Pas-Schoonen (author), MJ Verbruggen (author), T Hill (author), B Moffert (author), J Fuerst (author), S Schouten (author)