Borjian, Habib, “Median Succumbs to Persian after Three Millennia of Coexistence: Language Shift in the Central Iranian Plateau,” Journal of Persianate Societies, volume 2, no. 1, 2009, pp. 62-87. [1].
Borjian, Habib, “Median Dialects of Kashan,” Encyclopaedia Iranica, vol. 16, fasc. 1, 2011, pp. 38-48. [2].
Dandamayev, Muhammad & I. Medvedskaya (2006). "Media". Encyclopaedia Iranica (OT 10 ed.). Costa Mesa: Mazda.
Tafazzoli, Ahmad (1999). "Fahlavīyāt". Encyclopaedia Iranica. Vol. 9. New York: iranicaonline.org.
tufts.edu
perseus.tufts.edu
Godley, A. D., ed. (1920). Herodotus, with an English translation. Cambridge: Harvard UP. (Histories 1.110)
Hamilton, H. C. & W. Falconer (1903). The Geography of Strabo. Literally translated, with notes. Vol. 3. London: George Bell & Sons. p. 125. (Geography 15.2)