@article{saito_welzel_suyenaga_bueno_2006,  title={A method for fast determination of epigallocatechin gallate (EGCG), epicatechin (EC), catechin (C) and caffeine (CAF) in green tea using HPLC},  volume={26},  ISSN={0101-2061},  url={https://doi.org/10.1590/S0101-20612006000200023},  DOI={10.1590/S0101-20612006000200023},  number={2},  journal={Food Science and Technology},  publisher={Sociedade Brasileira de Ciência e Tecnologia de Alimentos},  author={Saito, Samuel T. and Welzel, Albert and Suyenaga, Edna S. and Bueno, Francie},  year={2006},  month={Apr},  pages={394–400} }