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- [22] DESORPTION OF RARE-EARTH ELEMENTS FROM A TUNGSTEN SURFACE SOVIET PHYSICS TECHNICAL PHYSICS-USSR, 1968, 12 (12): : 1639 - &
- [26] SOLUBILITY OF TANTALUM AND TUNGSTEN IN LIQUID RARE-EARTH METALS JOURNAL OF THE LESS-COMMON METALS, 1966, 11 (06): : 423 - +