References
1  Akima, Hiroshi. "A NEW METHOD
                    OF INTERPOLATION AND SMOOTH CURVE FITTING BASED ON LOCAL PROCEDURES." Journal
                        of the Association of Computing Machinery (JACM), Volume 17, Issue 4,
                    Oct. 1970: Pages 589 – 602.
2  OK, Jin-Kyu, SOHN, Jeong-Hyun,
                    YOO, Wan-Suk. “DEVELOPMENT OF NONLINEAR COUPLED MODE BUSHING MODEL BASED ON THE
                    BOUC-WEN HYSTERETIC MODEL.” Proceedings of the ASME 2007 International Design
                        Engineering Technical Conferences & Computers and Information in
                        Engineering Conference. IDETC/CIE 2007.
3  A. Kyprianou, J. Giacomin, K.
                    Worden, M. Heidrich and J. Bocking. “Differential evolution based identification
                    of automotive hydraulic engine mount parameters.” Proc Instn Mech Engrs.,
                    Volume 214, Part D, 2000.