1. Periodontal therapy;Goldman,1973
2. Longitudinal evaluation of free autogenous gingival grafts;Dorfman;J Clin Periodontol,1980
3. The relationship between the width of keratinized gingiva and gingival health;Lang;J Periodont,1972
4. Gray’s anatomy;Goss,1966
5. Free autogenous gingival grafts. Principles of successful grafting;Sullivan;Periodontics,1968