ASTM Standard F1717, “Standard Test Methods for Spinal Implant Constructs in a Vertebrectomy Model,” ASTM International, West Conshohocken, 2013. http://dx.doi.org/10.1520/F1717-13
 E. Wagnac, D. Michardière, A. Garo, P. J. Arnoux, J. M. Mac-Thiong and C. E. Aubin, “Biomechanical Analysis of Pedicle Screw Placement: A Feasibility Study,” Studies in Health Technology and Informatics, Vol. 158, 2009, pp. 167-171.
 Y. Wang, A. M. Jin and G. F. Fang, “Three-Demesional Finite Element Analysis of the Lumbar Pedicle Screw Instrumentation,” Journal of Clinical Rehabilitative Tissue Engineering Research, Vol. 12, No. 48, 2008, pp. 9439- 9442.
 F. B. Christensen, B. K. Nielsen, E. S. Hansen, S. Pilgaard and C. E. Bunger, “Anterior Lumbar Intercorporal Spondylodesis. Radiological and Functional Therapeutic Results,” Ugeskrift for Laeger, Vol. 156, No. 37, 1994, pp. 5285-5289.
 K. B. Sagomonyants, M. L. Jarman-Smith, J. N. Devine, M. S. Aronow and G. A. Gronowicz, “The in Vitro Response of Human Osteoblasts to Polyetheretherketone (PEEK) Substrates Compared to Commercially Pure Titanium,” Biomaterials, Vol. 29, No. 11, 2008, pp. 1563-1572. http://dx.doi.org/10.1016/j.biomaterials.2007.12.001
 P. D. Angevine, C. A. Dickman and P. C. McCormick, “Lumbar Fusion with and Without Pedicle Screw Fixation: Comments on a Prospective, Randomized Study,” Spine, Vol. 32, No. 13, 2007, pp. 1466-1471. http://dx.doi.org/10.1097/BRS.0b013e318060ccca