1. ASTM Designation: E-21-92, Reapproved 1998 for elevated temperature or E-8 in general, American Society for Testing and Materials (ASTM).
2. Fundamentals of Creep and Creep-rupture in Metals;Garofalo,1965
3. Creep Viscoelasticity and Creep Fracture in Solids;Gittus,1975
4. Creep of Metals and Alloys;Evans,1985
5. Creep of Metallic Materials;Cadek,1988