Sulimirski, Tadeusz. The Sarmatians: Volume 73 of Ancient peoples and places. New York, Praeger, 1970. с. 113 – 114. The evidence of both the ancient authors and the archaeological remains point to a massive migration of Sacian (Sakas)/Massagetan (great Jat) tribes from the Syr Daria Delta (Central Asia) by the middle of the second century B.C. Some of the Syr Darian tribes; they also invaded North India.