1. Anterior acromioplasty for the chronic impingement syndrome in the shoulder;Neer;J Bone Joint Surg [Am],1972
2. Acromioplasty for impingement with an intact rotator cuff;Hawkins;J Bone Joint Surg [Br],1988
3. Impingement lesions;Neer;Clin Orthop,1983
4. Impingement syndrome: a review of late stage II and early stage III lesions;Post;Orthop Trans,1985
5. Surgical treatment of impingement syndrome: 4-year follow-up;Raggio;Orthop Trans,1985