1. Archaean stromatolites from the Ngesi Group, Belingwe greenstone belt, Zimbabwe; preservation and stable isotopes — preliminary results
2. 1980. The isotopic composition of reduced carbon. In: and Ch. (Eds), Handbook of Environmental Isotope Geochemistry. Elsevier, Amsterdam, 329–406.
3. 1982. Stable isotope composition of algae and bacteria that inhabit hydrothermal environments in Yellowstone National Park, Carnegie Inst. Washington Yearbook.
4. and 1977. Compilation of stable isotope fractionation factors. Geological Survey Professional Paper, 440–KK, U.S. Government Printing Office. Figure 27.
5. 1976. Organisms that build stromatolites. In: (Ed.), Developments in Sedimentology, vol. 20, Stromatolites, Elsevier Scie. Publ. Co., Amsterdam, 113–140.