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Ramesh Ramapanicker; Nasir Baig Rashid Baig; Kavita De; Srinivasan Chandrasekaran. (2009). One-pot protection and activation of amino acids using pentafluorophenyl carbonates. , 15(12), 849–855. doi:10.1002/psc.1187 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research