Philip Lake, Albert Houtum-Schindler, Eduard Meyer, Karl F. Geldner and Karl H. Ethé, 1911 Encyclopædia Britannica (1911)
“ To the settled peasantry, these nomads of the steppe were always “the enemy” (dana, daha, Δάαι, Dahae) . Side by side with this name we find “Tūrān” and “Turanian”; a designation applied both by the later Persians and by modern writers to this region. The origin of the word is obscure, derived perhaps from an obsolete tribal name. It has no connexion whatever with the much later “Turks,” who penetrated thither in the 6th century after Christ. Though found neither in the inscriptions of Darius nor in the Greek authors, the name Turan must nevertheless be of great antiquity ”
