Simonovski P, Avramov N, Simeonov S, Milev S, Sovreski Z. Impact of the Structural Forms of Diaphragm Spring Beginning on Dynamic Durability of Diaphragm Springs of Vehicle Clutches. IJSBAR. 2017;36(3):291-300. Accessed September 13, 2025. https://www.gssrr.org/JournalOfBasicAndApplied/article/view/8169