1. Phenylketonuria: VIII. Relation between age, serum phenylalanine level, and phenylpyruvic acid excretion;Armstrong;Proc Soc. Exper. Biol. & Med.,1957
2. Phenylalanine tolerance tests on relatives of phenylketonuria children;Berry;Am. J. Human Genet.,1957
3. Phenylketonuria. I. Validation of microbiologic assay for serum 1-phenylalanine;Boyer;J. Lab. & Clin. Med.,1962
4. Testing for phenylketonuria;Brandon;J. Pediat.,1963
5. Phenylketonuria with normal Intelligence and Gowers’ muscular dystrophy;Coates;Arch. Dis. Childhood,1957