1. Persistent, aberrant Mongolian spots;Cole;Arch. Dermatol.,1950
2. Whitish haloes observed on the surrounding areas of café au lait spot combined with Mongolian spot;Sasagawa;Jap. J. Dermatol.,1975
3. Melano-blasts and melanocytes in fetal Negro skin;Zimmermann,1959
4. Diagnostic importance of café-au-lait spot in neurofibromatosis;Crowe;Arch. Intern. Med.,1953
5. Abnormalities of pigmentation;Mosher,1979