Citation: Mazej, Z.; Benkic, P.; Zemva, B.; Lutar, K. (2001). Novel oxonium compounds of lanthanoids: synthesis of (H3 O)3 La2 F (As F6)8, and syntheses and crystal structures of (H3 O)8 La2 F (As F6)13 and (H3 O)4 La2 F (As F3)2 (As F6)9. Journal of Fluorine Chemistry, 112, pp. 173-183.