1. K. Ochifuji, T. Taniguchi, Practice and Planning of an On-site-type Urban Snow-melting System Using Unused Energy, Riko Tosho, 2000 (in Japanese).
2. Heat storage using snow and ice;Hashimoto;Journal of the Japan Institute of Energy,2002
3. A study on the use of natural cryogenic energy in winter;Kobiyama;Transactions of the Japan Society of Mechanical Engineers (Series B),1987
4. Why have we forgotten that snow is a resource?;Kobiyama;Journal of the Japan Institute of Energy,1997
5. Wood chips as thermal insulation of snow;Skogsberg;Cold Regions Science and Technology,2005