1. Frozen Ground Engineering;Andersland,2004
2. Bird, K.J., 1981. Machine-generated displays of well logs and lithology from selected wells on the North Slope of Alaska; 7 wells from the east-central North Slope. U.S. Geological Survey Open-File Report 81-1036.
3. Bird, K.J., 1999. Geographic and geologic setting. Chapter GG, In: The Oil and Gas Resource Potential of the Arctic National Wildlife Refuge 1002 Area, Alaska, by ANWR Assessment Team: U.S. Geological Survey Open-File Report 98-34.
4. Paleotemperature estimates of the Alaskan Arctic Coastal Plain during the last 125,000 years;Brigham,1983
5. Permafrost in Canada;Brown,1970