1. T. Page, W.L. Nyhan, Abnormalities of purine and pyrimidine metabolism, in: B. Berg (Ed.), Neurologic Manifestations of Pediatric Diseases, Butterworth, Boston, MA, 1992, pp. 177–191.
2. R.N. Rosenberg, S.B. Pruisner, S. DiMauro, R.L. Barchi, L.M. Kinkel (Eds.), The Molecular and Genetic Basis of Neurological Disease, Butterworth-Heinemann, Stoneham, MA, 1992.
3. Detection of phenylketonuria in autistic and psychotic children;Lowe;J. Am. Med. Assoc.,1980
4. The autistic syndrome and phenylketonuria;Friedman;Schizophrenia,1969
5. An infantile autistic syndrome characterized by the presence of succinylpurines in the body fluids;Jaeken;Lancet,1984