1. S. Jank, Dissertation, Hamburg, 1998.
2. The electronic structure of organometallic complexes of the f elements
3. B. Unrecht, H.-D. Amberger, Rare Earths ‘98, Freemantle, WA, Australia, 25–30 October, 1998.
4. Systematics and Properties of the Lanthanides;Carnall,1982