Wu, M. Y., Y. L. Wang, X. J. Tan, and J. S. Gu. “Theoretical Study on the Reaction Between Phosphacyclopropenylidene and Ethylene: An Alternative Approach to the Formation of Phosphorus-Bearing Heterocyclic Compounds”. Journal of the Serbian Chemical Society, vol. 85, no. 9, Sept. 2020, pp. 1175-84, doi:10.2298/JSC191217026W.