L.  Gontrani, S. Cesaro, N., Stranges, S., Bencivenni, L., and Pierett, A., ?FTIR spectra and density functional theory PED assignments of oxiranes in Ar matrix at 12 K?, Spectrochimica Acta Part A-molecular and Biomolecular Spectroscopy, vol. 120, pp. 558?567, 2014.