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Velikorodov, A. V., Zukhairaeva, A. S., Chabakova, A. K., & Kovalev, V. B. (2018). Synthesis of New Functionally Substituted Aryl- and Hetarylcarbamates Based on Ninhydrin. Russian Journal of Organic Chemistry, 54(10), 1509–1514. doi:10.1134/s1070428018100123 
10.1134/S1070428018100123