1. Atresia of the bile ducts, choledochus cysts, inspissated bile syndrome;Idriss,1969
2. Atresia of the extrahepatic bile duct;Holder;Amer. J. Surg.,1964
3. Developmental anatomy;Arey,1954
4. Medical embryology;Langman,1963
5. Marijuana, LSD, and amphetamines;Gorodetzky;Drug Dependence,1970