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Hakamata, Wataru; Nakanishi, Ikuo; Masuda, Yu; Shimizu, Takehiko; Higuchi, Hajime; Nakamura, Yuriko; Saito, Shinichi; Urano, Shiro; Oku, Tadatake; Ozawa, Toshihiko; Ikota, Nobuo; Miyata, Naoki; Okuda, Haruhiro; Fukuhara, Kiyoshi . (2006). Planar Catechin Analogues with Alkyl Side Chains:  A Potent Antioxidant and an α-Glucosidase Inhibitor. Journal of the American Chemical Society, 128(20), 6524–6525. doi:10.1021/ja057763c 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research