TY - JOUR AU - Lin, J K; Lin, C L; Liang, Y C; Lin-Shiau, S Y; Juan, I M TI - Survey of catechins, gallic acid, and methylxanthines in green, oolong, pu-erh, and black teas JO - J Agric Food Chem VL - 46 PY - 1998 DO - 10.1021/jf980223x SP - 3635 EP - 3642 ER -