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Watkins, Ella J.; Almhjell, Patrick J.; Arnold, Frances H. . (2019). Direct enzymatic synthesis of a deep‐blue fluorescent noncanonical amino acid from azulene and serine. ChemBioChem, (), cbic.201900497–. doi:10.1002/cbic.201900497 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research