https://www.exporterindia.com/shandon/fully/cabin-leaf-springs-china-431207.htm.

https://www.ottobockus.com/sports/solution-overview/3s80-and-sprinter-foot.

R.D. Shokrieh Analysis and optimization of composite leaf spring Compos Struct, 60 (2003), pp. 317-325

J.C. Beardmore The potential for composites in structural automotive applications Compos Sci Technol, 26 (1986), pp. 251-281

C.J. Morris Composite integrated rear suspension Compos Struct, 5 (1986), pp. 233-242

Daugherty RL. “Composite leaf springs in heavy truck applications”. In: Composite Materials, Proceedings of the US-Japan conference, Tokyo, 1981.

W.J. Yu, H.C. Kim Double tapered FRP beam for automotive suspension leaf spring
Compos Struct, 9 (1988), pp. 279-300

S. Tibbits The emergence of 4D printing TED Conf (2013)

Farhang Momeni, Seyed M. Mehdi, N. Hasani, Xun Liu, Jun Ni A review of 4D printing
Mater Des, 122 (2017), pp. 42-79

Suong Van Hoa Factors affecting the properties of composites made by 4D printing (moldless composite manufacturing) Adv Manuf Polym Compos Sci, 3 (3) (2017), pp. 101-109

M.W. Hyer Stress analysis of fiber-reinforced composite materials
Destech Publications (2009)

M.S. Gill Development and fabrication of carbon/epoxy composite leaf springs using 4D printing Project report (ENGR 6991) Concordia University (2018)