Chemical analysis methods of rare earth impurities in rare earth metals and their oxides—Part 2: Determination of lanthanum, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and yttrium content in cerium metal and oxide
Chemical analysis methods of rare earth impurities in rare earth metals and their oxides—Part 4: Determination of lanthanum, cerium, praseodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and yttrium contents in neodymium metal and oxide