COTTON, F. A.; KIBALA, P. A.; MATUSZ, M. Structure of the second polymorph of niobium pentachloride. Acta Crystallographica Section C Crystal Structure Communications. 1991-11-15, roč. 47, čís. 11, s. 2435–2437. Dostupné online [cit. 2023-05-14]. DOI10.1107/S0108270191000239.
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COTTON, F. A.; KIBALA, P. A.; MATUSZ, M. Structure of the second polymorph of niobium pentachloride. Acta Crystallographica Section C Crystal Structure Communications. 1991-11-15, roč. 47, čís. 11, s. 2435–2437. Dostupné online [cit. 2023-05-14]. DOI10.1107/S0108270191000239.