1. The etiology of gingival recession associated with temporary crowns;Donaldson;J Periodontol,1974
2. Prosthetic considerations essential for gingival health;Stein;Dent Clin North Am,1960
3. Histologic considerations which govern where the margins of restorations should be located in relation to the gingiva;Waerhaug;Dent Clin North Am,1960
4. Gingival reactions to dental restorations;Karlsen;Acta Odontol Scand,1970