Tolong jelaskan mengenai Lihat pula dari Lantanum

Nouveau Traite de Chimie Minerale, Vol. VII. Scandium, Yttrium, Elements des Terres Rares, Actinium, P. Pascal, Editor, Masson & Cie, 1959

Chemistry of the Lanthanons, by R. C. Vickery, Butterworths 1953