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Kafle, Bijay; Baak, Jan; Brede, Cato . (2020). Quantification by LC-MS/MS of astragaloside IV and isoflavones in <i>Astragali radix</i> can be more accurate by using standard addition. Phytochemical Analysis, (), –. doi:10.1002/pca.2994 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research