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- [25] VANADIUM NIOBIUM AND TANTALUM ORGANOMETALLIC CHEMISTRY REVIEWS SECTION B-ANNUAL SURVEYS, 1968, 4 (01): : 23 - &
- [29] NIOBIUM + TANTALUM DISELENIDES RECUEIL DES TRAVAUX CHIMIQUES DES PAYS-BAS-JOURNAL OF THE ROYAL NETHERLANDS CHEMICAL SOCIETY, 1964, 83 (07): : 768 - &