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^Rogaev, Evgeny I.; Grigorenko, Anastasia P.; Moliaka, Yuri K.; Faskhutdinova, Gulnaz; Goltsov, Andrey; Lahti, Arlene; Hildebrandt, Curtis; Kittler, Ellen L. W.; Morozova, Irina (31 martie 2009; published online before print 27 februarie 2009). "Genomic identification in the historical case of the Nicholas II royal family". Proceedings of the National Academy of Sciences 106 (13): 5258–5263. doi:10.1073/pnas.0811190106. PMID 19251637. PMC 2664067. http://www.pnas.org/content/106/13/5258.abstractArhivat în , la Wayback Machine.. Retrieved 8 septembrie 2009
romanitas.ru
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^Rogaev, Evgeny I.; Grigorenko, Anastasia P.; Moliaka, Yuri K.; Faskhutdinova, Gulnaz; Goltsov, Andrey; Lahti, Arlene; Hildebrandt, Curtis; Kittler, Ellen L. W.; Morozova, Irina (31 martie 2009; published online before print 27 februarie 2009). "Genomic identification in the historical case of the Nicholas II royal family". Proceedings of the National Academy of Sciences 106 (13): 5258–5263. doi:10.1073/pnas.0811190106. PMID 19251637. PMC 2664067. http://www.pnas.org/content/106/13/5258.abstractArhivat în , la Wayback Machine.. Retrieved 8 septembrie 2009