Frantsouzoff, S.A. On the origin of the Arabic alphabetic letter-order. in W. Madelung, Yu. Petrosyan, H. Waardenburg-Kilpatrick, A. Khalidov, E. Rezvan (eds), Proceedings of the 17th Congress of the UEAI. (Union Européenne des Arabisants et Islamisants / St. Petersburg Branch of the Institute of Oriental Studies, Russian Academy of Sciences). St. Petersburg: Thesa, 1997.