Mukundan, U., M. Ambatkar, J. Patil, V. Sinkar, L. Basavaraju, and S. Guttapadu. “Tea Tissue Culture (B) Theanine and Polyphenols Accumulation in Tea Calli”. International Journal of Tea Science, Vol. 10, no. 01 and 02, June 2014, pp. 14-17, doi:10.20425/ijts.v10i1and2.4776.