1. P. Mårtensson, D. Zenkert and M. Åkermo: Composite Structures, 2015, vol. 134, pp. 572-578.
2. Do-Hyoung Kima, Hyun-Gyung Kimb and Hak-Sung Kim: Composite Structures, 2015, vol. 131, pp. 742-752.
3. R.K. Rathore, E.N. Karlus and R.L. Himte: International Journal of Engineering Research & Technology, 2014, vol. 3, pp. 1391-1396.
4. F. Perrard, F. Charvieux, and J. Languillaume: A new spring steel with improved ductility dedicated for high strength parabolic leaf springs. Proc. 2nd Int. Conf. Super-High Strength Steels, Peschiera del Garda, Italy, 2010.
5. S. Choi: Optimization of Microstructure and Properties of High Strength Spring Steel, Ph.D. Thesis, Posco, Korea, 2011.