1. and (1958). ‘Heat transfer in deep underground tunnels’, National Building Studies, Dept. of Scientific and Industrial Research, London Research Paper 26.
2. (1979). ‘Cost effective solar heated earth structures and earth/air tunnels’, Proceedings of the 4th National Passive Solar Conference. University of Delaware, USA, Vol 4, pp. 428–434.
3. (1980). ‘Performance evaluation of a terrestrial heat exchanger’, Proceedings of the 5th National Passive Solar Conference, Amharst, American Section of ISES, Massachusetts, USA, pp. 732–736.
4. Evaluation of an earth—air tunnel system for cooling/heating of a hospital complex
5. (1983). ‘Performance of earth air tunnel system’ (private communication).