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Müürsepp, T.; Haav, A. (1974). "X-ray diffraction study of the systems TlI-CsI, TlI-RbI, and TlI-Tl Cl". Physica Status Solidi A21 (2): K81. doi:10.1002/pssa.2210210251. Bibcode: 1974PSSAR..21...81M.
Blackman, M; Khan, I H (1961). "The Polymorphism of Thallium and Other Halides at Low Temperatures". Proceedings of the Physical Society77 (2): 471. doi:10.1088/0370-1328/77/2/331. Bibcode: 1961PPS....77..471B.