Zarathushtra in the Gathas and in the Greek and Roman classics : with notes on J. Darmesteter's theory regarding Tansar's letter to the king of Tabaristan, and the date of the Avesta - Geiger, Wilhelm, 1856-1943; Windischmann, Friedrich Heinrich Hugo, 1811-1861; Saṃjāṇā, Dārāb Peśotan Dāstur 1857-1931 (AMS Press, 1977)