1. Meta contrast.;Alpern;Journal of the Optical Society of America,1953
2. WISC patterning in endogenous mental deficiency.;Baroff;American Journal of Mental Deficiency,1959
3. Psycholinguistic aspects of mental retardation.;Bateman;Mental Retardation,1965
4. Learning abilities of the mentally retarded.;Baumeister,1967
5. Problems in comparative studies of mental retardates and normals.;Baumeister;American Journal of Mental Deficiency,1967