Europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and yttrium, of a purity by weight of >=95% (excl. intermixtures and interalloys)
Evropij, gadolinij, terbij, disprozij, holmij, erbij, tulij, iterbij, lutecij in itrij, s čistočo >= 95% mase (razen mešanic in zlitin)