1. : Chemical Evolution. Clarendon Press, Oxford 1969.
2. : The Origin of Life. Elsevier, Amsterdam, London, New York 1971.
3. : Exobiology. North-Holland, Amsterdam, London 1972.
4. u. : Molecular Evolution 1, Chemical Evolution and the Origin of Life. North-Holland, Amsterdam, London 1971.
5. The origin of the genetic code