1. R. Hooke, Lectures de potentia restitutiva, or of spring explaining the power of springing bodies, (John Martyn, 2016).
2. Spring Tension Performance Test Device
3. Measurement of Linear Springs’ Stiffness Factor Using Ultrasonic Sensing
4. Istron inc., “Universal testing systems” Istron, https://www.instron.com/en/products/testing-systems/universal-testing-systems, Accessed 5.4.2023.
5. Starrett, “Spring testing solutions” Spring Testing Solutions (Bulletin 1830), https://www.starrett.com/vdoc/Spring%20Testing%20Solutions%20(Bulletin%201830), Accessed 5.4.2023.