1. The heterogeneity of microphthalmia in the mentally retarded;Warburg;BDOAS,1971
2. Hydrocephalus, agyria, retinal dysplasia, encephalocele (HARD±E) syndrome: An autosomal recessive condition;Pagon;Birth Defects,1978
3. HARD±E: Warburg's syndrome;Pagon;Arch Neurol,1981
4. A familial syndrome of central nervous system and ocular malformations;Chemke;Clin Genet,1975
5. Lissencephaly;Walker;Arch Neurol Psychiatr,1942