1. and (1978). ‘Studies on the effect of bed aspect ratios and pressure drop on flow distribution in rock bed storage systems for solar energy applications’, Annual Conference of the Solar Energy Society of Canada, London, Ontario, paper 1–3–1.
2. (1974). ‘Sensible heat storage in liquids’ Report SLL-73-0263, Sandia Laboratories, California, USA.
3. (1976). ‘The ground used as energy source, energy sink or for energy storage’, NATO Science Committee Conference on thermal energy storage, Turnberry, Scotland, UK, Pergamon Press.
4. (1976). ‘Advanced thermal energy storage (TES) systems’, EPRI Report EM-256, Project RP 788.