1. Sufentanil, a very potent and extremely safe intravenous morphine-like compound in mice, rats, and dogs;Niemeggers;Arzneimittelforschung,1976
2. Narcotic cueing properties in intraventricularly administered sufentanil, fentanyl, morphine and metenkephalin;Colpaert;Eur J Pharmacol,1978
3. A comparative study of cardiovascular, neurological and metabolic side effects of eight narcotics in dogs;De Castro;Acta Anaesthesiol Belg,1979
4. N-4-substituted 1-(2-arylethyl)-4-piperidinylN-phenylpropanamides, a novel series of extremely potent analgesics with unusually high safety margin;Van Bever;Arzneimittelforschung,1976
5. The anesthetic potency of fentanyl in terms of its reduction of enflurane MAC;Murphy;Anesthesiology,1982