1. A modified procedure for the automatic analysis of amino acids;Piez;Anal. Biochem.,1960
2. Phenylalanine tolerance test on relatives of phenylketonuric children;Berry;Am. J. Human Genet.,1957
3. Phenylketonuria detection in the newborn infant as a routine hospital procedure;Guthrie;Children's Bureau Publication N. 419,1964
4. Phenylalanine hydroxylase activity in newborn infants;Allen;Pediatrics,1964
5. Serum phenylalanine and tyrosine levels in the newborn infant;Hsia;New England J. Med.,1962