1. Repositioning the attached gingiva;Nabers;J. Periodontol.,1954
2. Oral histology and embryology;Orban,1944
3. Frenum position and vestibular depth in relation to gingival health;Gottsegen;Oral Surg.,1954
4. Clinical evaluation of local gingival recession in children;Parfitt;J. Dent. Child.,1964
5. Mucogingival problems, prevalence and therapy in children;Maynard;J. Periodontol.,1975