1. The connective tissue fibres of the marginal gingiva;Arnim;J.A.D.A.,1953
2. Periodontal Therapy;Goldman,1968
3. Syllabus on Tooth Morphology;Hamaguchi,1970
4. Pontic design;Harmon;J. Prosth. Dent.,1958
5. Reaction of marginal periodontal tissues to restorative procedures;Löe;Int. Dent. J.,1968