Barth, Nomads of South Persia, pp. 109–111, 116–121, Marx, “Ecology and Politics,” pp. 41–74; Avshalom Shmueli, “Two Faces to the Village of Sa’ir,” in The End of Nomadism, ed. Shmueli (Jerusalem: Reshefim, 1980), pp. 13–25 (in Hebrew).