1. Andrews, G. C.: Diseases of the Skin for Practitioners and students, Ed. 4 W.B. Saunders Company, Philadelphia & London, 1961.
2. Andrews, G. C., Domonkos, A.M., Torres-Rodriguez, V.M. and Bembenista, J.K.: Haeman giomas treated and untreated. J.A. M. A., 165: 1114, 1957.
3. Anderson, W.A.D. Pathology, Ed. 4, The C.V. Mosby Company, St. Louis, 1961.
4. Bowers, R. E., Graham, E.A. & Tomlinson, K.M.: Natural History of Strawberry Nevus. A.M.A. Arch. Dermat, 82:667, 1960.
5. Eller, J.J. & Eller, W.D.: Tumours of the Skin. Benign and Malignant, Ed. 2, Lea and Febiger, Philadelphia, 1957.