1. Air conditioning for comfort and health, past-present-future;Harrington;J Franklin Inst,1933
2. Economic estimation of all-air type snow air-conditioning system;Kobiyama,1997
3. Remaining rate of snow stored in a shed established on or in the ground;Kobiyama,1997
4. Air-conditioning system by stored snow (2nd report, characteristics of the direct heat exchange between snow and air);Kobiyama,1997
5. Cool energy;Hokkaido Bureau of Economy, Trade and Industry,2008