1. How often does squamous cell carcinoma of the skin metastasize;Lund;Arch. Dermatol.,1965
2. Precancerous lesions of the skin;Graham;Primary Care,1975
3. Histopathologic considerations in the management of skin cancer;Freeman;J. Dermatol. Surg.,1976
4. Opinions;Winkelmann;The Schoch Letter,1982
5. Opinions;Chernosky;The Schoch Letter,1982