Levit, V. E. and Mandrescu, E. "The Independence Polynomial of a Graph--A Survey." In Proceedings of the 1st International
Conference on Algebraic Informatics. Held in Thessaloniki, October 20-23, 2005
(Ed. S. Bozapalidis, A. Kalampakas, and G. Rahonis). Thessaloniki,
Greece: Aristotle Univ., pp. 233-254, 2005.