The Turks and Europe. E-book. Formato PDF Gaston Gaillard   -  Forgotten Books, 2017  - 

Mongols begin to migrate in their turn; they occupied the whole Of Russia, as far as Novgorod to the north, and reached Liegnitz in Silesia. But, although they soon drew back from Western Europe, they remained till the fifteenth century in Eastern Russia, and in the eighteenth century they were still in the steppes of Southern Russia, and in the Crimea.