1. Behavioral consequences of increased phenylalanine intake by phenylketonuric children: A pilot study describing a methodology;Frankenburg;Am. J. Ment. Defic.,1973
2. Bickel, H.: Personal communication, 1971.
3. The natural history of untreated phenylketonuria;Pitt;Med. J. Aust.,1971
4. Termination of dietary treatment of phenylketonuria;Hudson;Arch. Dis. Child.,1967
5. Phenylketonuria, an Inherited Metabolic Disorder Associated with Mental Retardation;Centerwall,1972