1. Hutchinson J. The crateriform ulcer of the face: a form of epithelial cancer. Trans Pathol Soc London 1889; 40: 275–281.
2. MacCormac H, Scarff R W. Molluscum sebaceum. Br J Dermatol Syph 1936; 48: 624–627.
3. Baer R L, Kopf A W. Keratoacanthoma. In: Year Book of Dermatology. Chicago: Year Book Medical Publishers, 1962/1963; 7–41.
4. Rook A, Whimster I. Le kérato-acanthome. Arch Belg Dermatol Syph 1950; 6: 137–146.
5. Schwartz R A. Keratoacanthoma. J Am Acad Dermatol 1994; 30: 1–19.