1. S. P. von Halasz and O. Glemser inSulfur in Organic and Inorganic Chemistry, edited by A. Senning (Dekker, New York, 1971), Vol. 1.
2. Investigation by electron diffraction of the molecular structures of sulphur hexafluoride, sulphur tetrafluoride, selenium hexafluoride and selenium tetrafluoride
3. M. Schmidt and W. Siebert inComprehensive Inorganic Chemistry, edited by A. F. Trotman-Dickenson (Permagon, New York, 1973), Vol. 2, p. 846.
4. H. J. Emeleus,The Chemistry of Fluorine and Its Compounds(Academic, New York, 1969), pp 109–12.