Mawhinney, Robert C; Goddard, John D (2003). „Assessment of density functional theory for the prediction of the nature of the oxirene stationary point“. Journal of Molecular Structure: THEOCHEM. 629: 263. doi:10.1016/S0166-1280(03)00198-2.
dx.doi.org
Lewars, Errol G. (2011). Computational Chemistry - Introduction to the Theory and Applications of Molecular and Quantum Mechanics, 2nd (en), Springer. DOI:10.1007/978-90-481-3862-3. ISBN978-90-481-3862-3.
