1. Anon. (2007). International Tea Committee. Annual Bulletin of statistics.
2. Fingerprint of black teas from India: Identification of the region-specific characteristics;Borse;Food Chemistry,2002
3. Effect of harvesting policy and nitrogen rates on the production of tea in Central Africa. I. Yield and crop distribution;Cloughley;Experimental Agriculture,1983
4. Fertilizer for 1981;Ellis;Tea Research Foundation of Central Africa, Quarterly Newsletter,1981
5. Study of catechin and xanthine tea profiles as geographical tracers;Fernandez;Journal of Agricultural and Food Chemistry,2002