1. Biomechanically relevant anatomy and material properties of the spine and associated elements;Benzel,1995
2. Surgical approaches to the lumbar spine;Found,1991
3. Anterior approach to the thoraco-lumbar junction by a retroperitoneal-extrapleural technic;Mirbaha;Clin Orthop,1973
4. Surgical anatomy of the sacrum;Rengachry,1994
5. Surgical anatomy and operative approaches to the sacrum;Stephen,1991