1. Ascher DW, Holzer P, Sutter B, Tritthart H (1991) Nucleus-pulsus Denaturierung bei Bandscheibenprotrusionen. Siebert WE, Wirth UCJ (eds) Laser in der Orthopädie. Thieme, Stuttgart, pp 169–172
2. Bonati AO (1991) Arthroscopic lumbar laser disectomy. In: 1st international symposium lasers in orthopaedic surgery, 26-29 Sept 1991, San Francisco, pp 4–5
3. Choy DSJ, Ascher PW, Saddekui S, Alkaitis D, Liebler W, Hoghes J, Diwan S, Altman P (1992) Percutaneous laser disc decompression. Spine 12:949–956
4. Choy DSJ, Michelsen J, Getrajdman G, Diwan S (1992) Percutaneous laser disc decompression. An update-spring 1992. J Clin Laser Med Surg 177–184
5. Choy DSJ (1991) Percutaneous laser disc decompression (PLDD). In: 1st international symposium lasers in othropaedic surgery, 26-29 Sept 1991, San Francisco, p 24