1. Disorders of keratinization;Griffiths,1992
2. Parakeratosis Mibelli and skin carcinoma;Goerttler;Humangenetik,1975
3. Porokeratosis and malignant skin tumors;Otsuka;J Cancer Res Clin Oncol,1991
4. Porokeratosis palmaris et plantaris disseminata with squamous cell carcinoma;Ruocco;G Ital Dermatol Venereol,1990