1. (1982): The pathology of central nervous system defects in human fetuses of different gestational ages. In: Advances in the Study of Birth Defects Central Nervous System and Craniofacial Malformations. ed. Alan R. Liss, Inc., New York, pp. 1-17.
2. and (1981): Etiologic heterogeneity of anencephaly. Cited by Martin et al. ('83).
3. Schisis-association