1. A risk-benefit assessment of tramadol in the management of pain.;Radbruch;Drug Safety,1996
2. The mechanism(s) of action and pharmacokinetics of tramadol hydrochloride.;Raffa;Rev Contemp Pharmacother,1995
3. Opioid and nonopioid components independently contribute to the mechanisms of action of tramadol, an ‘atypical’opioid analgesic.;Raffa;J Pharmacol Exp Ther,1992
4. . Complementary and synergistic antinociceptive interaction between the enantiomers of tramadol.;Raffa;J Pharmacol Exp Ther,1993
5. Metabolismus von Tramadol bei Mensch und Tier.;Lintz;Arzneim Forsch/Drug Res,1981