1. Associate Committee on Geotechnical Research. 1988. Glossary of permafrost and related ground-ice terms. Technical Memorandum 142, National Research Council of Canada: Ottawa, Ontario.
2. Arctic, Desert, Tropic Information Center (ADTIC) Research Studies Institute. 1955. Glossary of Arctic and Subarctic Terms, ADTIC Publication A-105. Maxwell Air Force Base: Alabama, AL; 90.
3. 1973. Normal Freezing and Thawing Degree-Days for Canada: 1931–1960, Publication CLI 4–73. Environment Canada, Atmospheric Environment Service, Downsview: Ontario; 38.
4. 1979. Degree Days: The Different Types, Research Note No. 138. National Research Council Canada, Division of Building Research: Ottawa, Building; 8.
5. The circumpolar active layer monitoring (calm) program: Research designs and initial results1