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Iwata, Hiroshi; Shimada, Kunio . (2013). Formulas, Ingredients and Production of Cosmetics || Raw Materials of Cosmetics. , 10.1007/978-4-431-54061-8(Chapter 2), 21–86. doi:10.1007/978-4-431-54061-8_2 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research