Linguistic phylogenies support back-migration from Beringia to Asia. by Mark A Sicoli, Gary Holton

“…Recent arguments connecting Na-Dene languages of North America with Yeniseian languages of Siberia have been used to assert proof for the origin of Native Americans in central or western Asia. …”
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Ancient Connections of Sinitic by David Bradley

“…Using the standard techniques of comparative linguistics, a remote linkage between the Sino-Tibetan languages, including Sinitic, the Yeniseian languages of Siberia, and the Na-Dene languages of northwest North America is demonstrated. …”
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