1. Chondromalacia patellae;Øvre;Acta Chir Scand [Suppl],1936
2. Chondrectomy in chondromalacia patients;Felländer;Acta Orthop Scand,1951
3. Diseases of the knee joint;Smillie,1974
4. A rational approach to the treatment of the patello-femoral pain;Radin;Clin Orthop,1979
5. Patellar pain;Insall;J Bone Joint Surg,1982