1. Cochin, J., Axelrod, J.: Biochemical and pharmacological changes in the rat following chronic administration of morphine, nalorphine and normorphine. J. Pharmacol. exp. Ther. 125, 105?110 (1959)
2. Cooper, J., Brodie, B. B.: The enzymatic metabolism of hexobarbital (Evipal). J. Pharmacol. exp. Ther. 114, 409?417 (1955)
3. Eling, T. E., Harbison, R. D., Becker, B. A., Fouts, J. R.: Diphenylhydantoin effect on neonatal and adult rat hepatic drug metabolism. J. Pharmacol. exp. Ther. 171, 127?134 (1970)
4. Ettinger, M. B., Ruchhoft, C. C., Lishka, R. J.: Senisitive 4-amino-antipyrine method for phenolic compounds. Anal. Chem. 23, 1783?1788 (1951)
5. Gram, T. E., Rogers, L. A., Fouts, J. R.: Further studies on the metabolism of drugs by subfractions of hepatic microsomes. J. Pharmacol. exp. Ther. 155, 479?493 (1967)