1. Ultraviolet radiation and skin cancer in man
2. Incidence of cutaneous cancer in Minnesota
3. Primary cancer of the skin. In: , , , , eds. Harrison's Principles of Internal Medicine, ed. 8. United States of America: McGraw-Hill, 1977; 1795–1796.
4. Ultraviolet Radiation as a Cause of Skin Tumors
5. . Worldwide epidemiology of premalignant and malignant cutaneous lesions. In: , , , eds. Cancer of the Skin: Biology, Diagnosis, Management, vol. 1. United States of America: W. B. Saunders, 1976: 405–434.