1. Gmelins Handbook of Inorganic Chemistry, 8th Edn., Boron compounds [3rd Suppl.] Vol. 3. Berlin, Heidelberg, New York: Springer 1988
2. Martin, J.M.L., François, J.P., Gijbels, R.: J. Chem. Phys.90, 6469 (1989)
3. ZFI Mitteilungen, nr. 134: Beiträge zur Clusterforschung. Akademie der Wissenschaften der DDR, September 1987
4. Chase, M.W. Jr., Davies, C.A., Downery, J.R., Jr., Frurip, D.J., McDonald, R.A., Syverud, A.N.: J. Phys. Chem. Ref. Data14 (1985) [Suppl. 1]: JANAF Thermochemical Tables, 3rd Edn (2 volumes)
5. Huber, K.P., Herzberg, G.: Constants of diatomic molecules. New York: Van Nostrand Reinhold 1979