1. ADAMS, T., LOEWE, S., JELINEK, C., & WOLFF, H. Tetrahydorcannabinol homologues with marihuana activity. Journal of the American Chemical Society, 1941, 63, 1971–1976.
2. CHOPRA, R. N., & CHOPRA, G. S. The present position of hemp-drug addiction in India. Indian Journal of Medical Research, 1939, Supplement No. 31.
3. McGLOTHLIN, W. H. Cannabis: A reference. In P. Solomon (Ed.), The marihuana papers. New York: Signet Press, 1