Supernumary polylogarithmic ladders and related functional equations. L. Lewin; M. Abouzahra — 1990 Aequationes mathematicae
The polylogarithm in the field of two irreducible quintics. L. Lewin; M. Abouzahra — 1986 Aequationes mathematicae
Addendum to the article: Polylogarithms in the field of omega (a root of a given cubic): Functional equations and ladders. L. Lewin; Xiao Hongnian; M. Abouzahra — 1988 Aequationes mathematicae