Vollers, K. The system of Arabic sounds as based upon Sibaeih and Ibn Yaïsh. Pages 130-154 in E.D. Morgan (ed.), Transactions of the Ninth International Congress of Orientalists (held in London, 5th to 12th September 1892). Semitic, Egypt and Africa, Geographical, Archaic Greece and the East, Persia and Turkey, China, Central Asia and the Far East, Australasia, Anthropology and Mythology Sections. 2. [Reprinted Nendeln/Liechtenstein: Kraus Reprint, 1968]. London: For the Committee of the Congress, 1893.
