^"Cyrillic Supplement: Range: 0500–052F" (PDF). The Unicode Standard, Version 6.0. p. 45. Retrieved 2011-05-23.
^Everson, Michael (2007-03-21). "Proposal to encode additional Cyrillic characters in the BMP of the UCS" (PDF). OCLC 1139558740. Retrieved 2017-10-11.
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