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1993 Journal Article The xanthine content of guarana and its preparationsBempong, D. K., Houghton, P. J. and Steadman, Kathryn (1993). The xanthine content of guarana and its preparations. International Journal of Pharmacognosy, 31 (3), 175-181. doi: 10.3109/13880209309082937 |
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1991 Conference Publication The caffeine content of GuaranaBempong, D., Houghton, P. J. and Steadman, K. (1991). The caffeine content of Guarana. -, -, 1991. Wiley-Blackwell. |
