Strates, Basil S., and John F. Connolly. 1989. “Osteogenesis in Cranial Defects and Diffusion Chambers: Comparison in Rabbits of Bone Matrix, Marrow, and Collagen Implants”. Acta Orthopaedica 60 (2):200-203. https://doi.org/10.3109/17453678909149254.