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2. On the use of a single uniaxial test to estimate deformation rates in some structures undergoing creep;Mackenzie;Int. J. Mech. Sci,1968
3. Reference stress concepts in the analysis of structures during creep;Sim;Int. J. Mech. Sci,1970
4. Johnsson. A., An alternative definition of reference stress for creep, Proc. I. Mech. E. Conf on Creep and Fatigue in Elevated Temperature Applications, I. Mech. E., 1974, Paper C205/73.
5. Reference stress for structures obeying the Prandtl and Dorn creep laws;Johnsson;J. Mech. Eng. Sci,1974