Lanthanides Lanthanides: Chemical, spectroscopic, and magnetic properties along with information on oxidation states. (Lanthanides) http://www.hull.ac.uk/php/chsajb/heavy_ho/lanthanides.html
Rare Earth Elements On The Net Rare Earth Elements On The Net: General information about lanthanides, history, properties, and applications. (Lanthanides) http://osoon.ut.ee/~hahha/re/
The Luminescent Lanthanide Homepage The Luminescent Lanthanide Homepage: Features an overview of the group, how they can be made luminescent, bibliography, and links. (Lanthanides) http://perso.wanadoo.fr/mhvwerts/lanthanides/