J. ZUBRZYCKI, N. SMIDOVA, J. LITAK, and A. AUSIYEVICH, “NUMERICAL ANALYSIS OF SPINAL LOADS IN SPONDYLOLISTHESIS TREATMENT USING PEDICLE SCREWS – PRELIMINARY RESEARCH”, Appl. Comput. Sci., vol. 13, no. 3, pp. 64–76, Sep. 2017.