1. Köster , R. 1983. Houben-Weyl, Methoden der organischen Chemie, Vol. Band 13/3b, 424Stuttgart, New York: Georg Thieme Verlag.
2. Boron trifluoride co-ordination compounds
3. Greenwood , N. N. 1973. Comprehensive Inorganic Chemistry;, Vol. 1, 665Oxford, New York, Toronto, Sydney, Braunschweig: Pergamon Press.
4. Enri , J. and
Györi , B. 1987. Comprehensive Coordination Chemistry;, Edited by:
Wilkinson , G. Vol. 3, 81Oxford, New York, Beijing, Frankfurt, Sao Paulo, Sydney, Tokyo, Toronto: Pergamon Press.