1. Rennert, R.; Kullig, E.; Esderts, A.; Vormwald, M.; Luke, M.: FKM-Guideline “Analytical Strength Assessment”. 7th edition. VDMA-Verlag, Frankfurt/M., 2020.
2. Berger, C.; Blauel, J. G.; Hodulak, L.; Pyttel, B.; Varfolomeev, I.: FKM-Guideline “Fracture mechanical Strength Assessment” (in German). 4th edition. VDMA-Verlag, Frankfurt/M., 2018.
3. Fiedler, M., Wächter, M., Varfolomeev, I., Vormwald, M., Esderts, A: FKM-Guideline “Analytical Strength Assessment under explicit consideration of nonlinear material behaviour” (in German). 1st edition. VDMA-Verlag, Frankfurt/M., 2019.
4. Kletzin, U.; Reich, R.; Oechsner, M.; Spies, A.: FKM-Guideline “Analytical Strength Assessment for Springs and Spring Elements”. 1st edition. VDMA-Verlag, Frankfurt/M., 2020.
5. TGL 19 340 Endurance strength of machine components” (in German), GDR-Standard, 1983.