1. Version 4.5a;ABAQUS,1985
2. Measurement of the fracture toughness of glacier ice;Andrews;J. Glaciol.,1985
3. Standard test method for plane-strain fracture toughness of metallic materials;ASTM E399-83,1985
4. The friction and creep of polycrystalline ice;Barnes,1971
5. Fracture of freshwater and urea model ice;Bentley,1988