1. Martens, C. S. in Microbial Growth on C1 Compounds (eds Crawford, R. L. & Hanson, R. S.) 276–281 (Am. Soc. for Microbiology, Washington DC, 1984).
2. Tyler, S. C. in Microbial Production and Consumption of Greenhouse Gases: Methane, Nitrogen Oxides, and Halomethanes (eds Rogers, J. E. & Whitman, W. B.) 7–38 (Am. Soc. for Microbiology, Washington DC, 1991).
3. Cicerone, R. J. & Oremland, R. S. Global Biogeochem. Cycles 2, 299–327 (1988).
4. Brooks, J. M., Reid, D. F. & Bernard, B. B. J. geophys. Res. 86, 11029–11040 (1981).
5. Burke, R. A. Jr, Reid, D. F., Brooks, J. M. & Lavoie, D. M. Limnol. Oceanogr. 28, 19–32 (1983).