4Zhang Jinzhao. Application of industry material of heat insulation in permafrost region [A]. Proceeding of the First Chinese Youth Conference on Environmental and Engineering[C]. Lanzhou: Lanzhou University Press, 1994, 78-83. [章金钊. 工业隔热材料在多年冻土地区的应用研究[A]. 第一届全国寒区环境与工程青年学术会议论文集[C]. 兰州: 兰州大学出版社, 1994. 78-83.]
5Gandahl R. Some aspects of the design of roads with boards of plastic foam [A]. Proceeding of the 3rd International Conference on Permafrost [C]. Edmonton: National Research Council of Canada, 1978. 792-797.
6Johnson G H. Performance of an insulated roadway on permafrost [A]. Proceeding of the 4th International Conference on Permafrost [C]. Wathingtown D.C.: National Academy Press, 1983. 548-553.
7Olson M E. Synthetic insulation in Arctic roadway embankments [A]. Proceedings of the 3rd International Cold Regions Engineering Specialty Conference[C]. Ottawa: Canadian Society of Civil Engineering, 1984. 739-752.
