1. Tumors of the epidermal appendages;Lever,1983
2. Basal cell carcinoma with metastasis: Review of literature;Safai;Arch Pathol Lab Med,1977
3. Basal cell and squamous cell carcinoma;Skouge,1988
4. Photocarcinogenesis;Forbes,1986
5. Non-melanoma skin cancer and melanoma;Harber,1989