1. Carden, P.O. (1974a). Provisional Australian Patent P.B.9168.
2. Carden, P.O. (1974b). Energy Conversion Technical Report No. 8, Department of Engineering Physics, The Australian National University, Canberra, Australia.
3. Energy corradiation using the reversible ammonia reaction
4. Carden, P.O. (1981). Energy Conversion Technical Report No. 23, Department of Engineering Physics, The Australian National University, Canberra, Australia.
5. The efficiencies of thermochemical energy transfer