Bosemark, Per, et al. “Augmentation of Autologous Bone Graft by a Combination of Bone Morphogenic Protein and Bisphosphonate Increased Both Callus Volume and Strength”. Acta Orthopaedica, vol. 84, no. 1, Feb. 2013, pp. 106-11, doi:10.3109/17453674.2013.773123.