BOOS, N. The Cotrel-Dubousset instrumentation in the treatment of spondylolysis and spondylolisthesis. 7th Proceeding of the International Congress on Cotrel-Dubousset Instrumentation. 1990, 107-111
KUMANO, K. Lumbosacral fusion for lumbar spondylosis using C-D-I. Pedicle screws indication and surgical technique. 7th Proceeding of the International Congress on Cotrel-Dubousset Instrumentation. 1990, 117-122