1. A Failure Criterion for Multi-Axial Fatigue Stresses;F B Stulen;Proceedings of the American Society for Testing Materials,1954
2. Discussion on The strength of metals under combined alternating stresses;G Staneld;Proceeding of the Institution of Mechanical Engineers,1935
3. An Explanation on Fatigue Limit under Combined Stress;T Matake;Bulletin of JSME,1977