Fatigue strength of VDSiCr spring steel under cyclic torsion and cyclic axial loading at different load ratios in the VHCF regimeR. Schuller, H. Mayer, D. Irrasch, M. Hahn and M. Bacher-HöchstMATEC Web of Conferences, 12 (2014) 01003DOI: https://doi.org/10.1051/matecconf/20141201003