1. Focal Epithelial Hyperplasia: An Unusual Oral Mucosal Lesion Found in Indian Children;Archard;Oral Surg,1965
2. Histopathology of Focal Epithelial Hyperplasia;Clausen;Tandlaegebladet,1969
3. Focal Epithelial Hyperplasia of the Oral Mucosa in a Southwest Greenlandic Population;Clausen;Scand. J. Dent. Res,1970
4. Focal Epithelial Hyperplasia;Clausen;Tandlaegebladet,1970
5. Oncogenic Viruses;Gross,1970