Studies in the iconography of northwest semitic inscribed seals: Proceedings of a symposium held in Fribourg on april 17-20, 1991. Edited by: Sass, Benjamin; Uehlinger, Christoph (1993). Fribourg, Switzerland / Göttingen, Germany: University Press / Vandenhoeck & Ruprecht.
Sass, Benjamin (1991). Studia Alphabetica: On the Origin and Early History of the Northwest Semitic, South Semitic and Greek Alphabets. Freiburg, Switzerland / Göttingen, Germany: Universitätsverlag / Vandenhoeck & Ruprecht.