Microanalysis with 14C-Dansyl Chloride of Amino Acids and Amines in the Cerebrospinal Fluid of Patients with Phenylketonuria – I. Analysis in untreated phenylketonuria - Quentin, C.-D.; Behbehani, A. W.; Schulte, F. J.; Neuhoff, V. (Neuropädiatrie, 1974)