— lanthanides (métaux terrestres rares): lanthane, praséodyme, samarium, gadolinium, dysprosium, erbium, ytterbium, cerium, néodyme, europium, terbium, holmium, thulium, lutécium.
— lanthadinen (zeldzame aardmetalen): lanthaan, praseodymium, samarium, gadolinium, dysprosium, erbium, ytterbium, cerium, neodymium, europium, terbium, holmium, thulium, lutetiumEurLex-2 EurLex-2