Analysis of information sources in references of the Wikipedia article "Бактрия" in Russian language version.
.The Tajiks are the direct descendants of the Iranian peoples whose continuous presence in Central Asia and northern Afghanistan is attested from the middle of the 1st millennium bc. The ancestors of the Tajiks constituted the core of the ancient population of Khwārezm (Khorezm) and Bactria, which formed part of Transoxania (Sogdiana). Over the course of time, the eastern Iranian dialect that was used by the ancient Tajiks eventually gave way to Persian, a western dialect spoken in Iran and Afghanistan.
.Contemporary Tajiks are the descendants of ancient Eastern Iranian inhabitants of Central Asia, in particular the Soghdians and the Bactrians.
.The Tajiks are the direct descendants of the Iranian peoples whose continuous presence in Central Asia and northern Afghanistan is attested from the middle of the 1st millennium bc. The ancestors of the Tajiks constituted the core of the ancient population of Khwārezm (Khorezm) and Bactria, which formed part of Transoxania (Sogdiana). Over the course of time, the eastern Iranian dialect that was used by the ancient Tajiks eventually gave way to Persian, a western dialect spoken in Iran and Afghanistan.
.Contemporary Tajiks are the descendants of ancient Eastern Iranian inhabitants of Central Asia, in particular the Soghdians and the Bactrians.