1. Cotton, F. A., Wilkenson, G.: Advanced inorganic chemistry, John Wiley and Sons, Inc., New York 1972
2. Smith, J. D.: Comprehensive inorganic chemistry, (Ex. ed. Tortman-Dickenson, A. F.), Oxford, Pergamon Press, Vol. II (1973)
3. Peterson, L. K.: Int. Rev. Sci. 4, 319 (1975)
4. Morgan, G. T.: Organic compounds of arsenic and antimony, London, Longmans, Green and Co. 1918
5. Kolditz, L.: Adv. inorgan. radiochem., Academic Press, New York, 7, 1 (1965)