1. Cutaneous Ossification;Roth;Arch. Pathol,1963
2. Osseous Choristomas of Intraoral Soft Tissue;Krolls;Oral Surg,1971
3. A Textbook of Oral Pathology;Shafer,1974
4. Fasciitis Ossificans;Kwittken;Am. J. Clin. Pathol,1969
5. A Textbook of Oral Pathology;Shafer,1974