References
- Bulletin on Narcotics 1970; Vol. XXI, Nos. 3 and 4; Vol. XXII, No. 1
- Am. Professional Pharmacists 1958; 24(4)299
- Patzig Block B. American Professional Pharmacist 1958; Vol. 24(No. 4)300, Naturwissensch., I, 13, 1953 cited by Gunnar Gjerstad
- Gjerstad Gunnar. American Professional Pharmacist 1958; Vol. 24(No. 4)300
- Dishotsky Norman I., Loughman William D., Mogar Robert E., Lipscomb Wendell R. Science 1971; 172(No. 3982)431–40
- Journal Mondiale de Pbarmade 1970, No. 3: 187–205