Adotoledo, D., Aviyente, V., Martin, J.M.L., Lifshitz, C., “Modeling Proton Bound Methanol, Ammonia, and Amine Complexes of 12-crown 4-ether and Dimethoxyethane ("glyme") Using Density Functional Theory”, Journal of Physical Chemistry A, 102, 31, 6357-6365, 1998.