Brown, D.; Petcher, T. J.; Smith, A. J. (1968). "Crystal Structures of some Protactinium Bromides". Nature217 (5130): 737. doi:10.1038/217737a0. Bibcode: 1968Natur.217..737B.
Brown, D.; Petcher, T. J.; Smith, A. J. (1969). "The crystal structure of β-protactinium pentabromide". Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry25 (2): 178. doi:10.1107/S0567740869007357.
D. Brown, T. J. Petcher, A. J. Smith: The crystal structure of β-protactinium pentabromide. In: Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry. 25, S. 178–182, எஆசு:10.1107/S0567740869007357.
D. Brown: The polymorphism of protactinium pentabromide. In: Inorganic and Nuclear Chemistry Letters. 15, 1979, S. 219–223, எஆசு:10.1016/0020-1650(79)80132-4.
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Brown, D.; Petcher, T. J.; Smith, A. J. (1968). "Crystal Structures of some Protactinium Bromides". Nature217 (5130): 737. doi:10.1038/217737a0. Bibcode: 1968Natur.217..737B.
