1. Amino Acid Metabolism, Volume 10: Major Problems in Clinical Paediatrics;Scriver C. R.;Saunders, Philadelphia, London, Toronto,1973
2. Metabolic Basis of Inherited Disease;Stanbury J. B.;3rd Edition, McGraw Hill Book Company,1972
3. The occurrence of cystinuria in healthy young men and women;Lewis H. B.;Ann. intern. Med.,1932
4. Cystinuria
5. The incidence of homozygous cystinuria in Swedish school children;Bostrom H.;Acta. paediat. (Uppsala),1959