1. BS 3500: 1969. Methods for Creep and Rupture Testing of Metals. (1981).
2. DIN 50119. Testing of Materials, Creep Test, Definitions, Symbols, Procedure, Evaluation. DIN Deutsches Institut fur Normung eV, Berlin, Germany (1952).
3. ASTM E 292-83.Standard Practice for Conducting Time-to-Rupture Notch Tension Tests of Materials. American Society for Testing and Materials, Philadelphia, USA.
4. Creep rupture under multi-axial states of stress