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Bernd-Uwe Haller; Susanne Kruber; Prof. Dr. Martin E. Maier. (1998). A Practical Synthesis of the Cyclohexyl Part of the Immunosuppressant FK506. , 340(7), 656–661. doi:10.1002/prac.19983400710 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research