Xue Li, Yang Wang, Donghui Wei & Zhongjun Li. (1970). A Theoretical Study on the Reaction Mechanisms and Stereoselectivities of NHC-Catalyzed [2 + 2] Cycloaddition of Ketene with C=N Double Bond of Isothiocyanate. Communications in Computational Chemistry. 4 (2). 36-47. doi:10.4208/cicc.2016.v4.n2.1