Hill, T. M.; Kennett, J. P.; Valentine, D. L. (2004): Isotopic evidence for the incorporation of methane-derived carbon into Foraminifera from modern methane seeps, Hydrate Ridge, Northeast Pacific. Pergamon, Oxford, International, Geochimica et Cosmochimica Acta, 68 (22), 4619-4627, georefid:2005-026035