1. Low temperature latent heat thermal energy storage: Heat storage materials;Abhat;Solar Energy,1989
2. Ice Keeps Alitalia Cool, Application Leaflet No,1999
3. The economics of ice thermal storage;Beggs;Building Res. Inform.,1991
4. Source Energy and Environmental Impacts of Thermal Energy Storage, Technical Report No. P500-95-005,1996
5. Harp Guinness Subsidiary (Ireland),2001