1. A study on systematic wood anatomy in Cannabis;Anderson;Botanical Museum Leaflets, Harvard University,1974
2. Leaf variation among Cannabis species from a controlled garden;Anderson;Botanical Museum Leaflets, Harvard University,1980
3. Frozen Tomb of the Scythians;Artamonov;Scientific American,1965
4. Cannabis;Bouquet;Bulletin on Narcotics,1950
5. Scythian Cannabis verification project;Clarke;Journal of the International Hemp Association,1995