Leighton, Philip A.; Perkins, William A.; Renquist, Melvin L. (1947). "A Modification of Wenker's Method of Preparing Ethyleneimine". J. Am. Chem. Soc. 69 (6): 1540. doi:10.1021/ja01198a512.
Kashelikar, D. V.; Fanta, Paul E. (1960). "Chemistry of Ethylenimine. VII. Cyclooctenimine or 9-Azabicyclo[6.1.0]nonane". J. Am. Chem. Soc.82 (18): 4927–30. doi:10.1021/ja01503a044.