bibliographicCitation |
TU Y, YANG X, ZHANG S, ZHU Y. Determination of theanine and γ-aminobutyric acid in tea by high performance liquid chromatography with precolumn derivatization. Chinese Journal of Chromatography. 2013 Sep 12;30(2):184–9. doi: 10.3724/sp.j.1123.2011.10037. |