1. Risk of dual occurrence of mongolism in sibships;Berg;Arch. Dis. Child.,1961
2. Risks of parents who had one child with Down's Syndrome having another child similarly affected;Cartes;Lancet,1961
3. Incidence of mongolism and its diagnosis in the newborn;Carter;Brit. J. soc. Med.,1951
4. Aetiological aspects of mental defect;Laxova;Proc. Third Congr. int. Assoc. Sci. Study ment. Defic. Memorial Session,1973
5. Dermatoglyphic characteristics of 21-trisomy mosaicism in relation to the fully developed syndrome and normality;Loesch;J. ment. Defic. Res.,1974