Williams, Dudley, ed. (1962). Methods of Experimental Physics, Volume 3: Molecular Physics. New York and London: Academic Press. doi:10.1021/ed040pA324.
T.F.Deutsch; S.R.J.Brueck (1978). "Collisionless intramolecular energy transfer in vibrationally excited SF6". Chemical Physics Letters. 54 (2): 258–264. doi:10.1016/0009-2614(78)80096-7.