1. Local anesthetic activity and acute toxicity of ()-2-(N-ethylpropylamino)-2', 6'-butyroxylidide;Adams;Excerpta med. (Amst.),1972
2. Pharmacology and toxicology of HS-37, a new potent local anaesthetic;Åkerman;Excerpta med. (Amst.),1972
3. Bromage, P. R. (1965) A comparison of the hydrochloride and carbon dioxide salts of lidocaine and prilocaine in epidural analgesia. Acta anaesth. scand. Suppl. 16, 55.
4. Engberg, G. (1974) The use of ephedrine in epidural analgesia. In preparation.