1. The course of schizoaffective disorders;Angst,1986
2. Genetic models and the transmission of schizophrenia;Baron,1987
3. Severe mental retardation among children in the country of Aarhus, Denmark;Bernsen;Acta Psychiatr. Scand.,1976
4. Mental Subnormality in the Community;Birch,1970
5. Die Psychosen im Gefolge von akuten Infektionen, Allgemeinerkrankungen und inneren Erkrankungen;Bonhoeffer,1912