Stefanidou, M. Athanaselis, S. Alevisopoulos, G. Papoutsis, J. Koutselinis, A., Δ9-Tetrahydrocannabinol content in cannabis plants of Greek origin, Chemical and Pharmaceutical Bulletin, (48), 743-745, 2000, Pharmaceutical Society of Japan, 0009-2363, 1347-5223