Sulak Talawat, Pimpan Ahantharik, Sajeena Laohawiwattanakul, Apinya Premsuk, and Sunanta Ratanapo, “Efficacy of Fermented Teas in Antibacterial Activity”, Agr. Nat. Resour., vol. 40, no. 4, pp. 925–933, Aug. 2006.