Referee for selected mathematics journals:
(a). AMS MathSciNet Mathematical Reviews (Reviews of published work)
(b). Indian Journal of Pure and Applied Mathematics
(c). Journal of Algebraic Combinatorics
(d). Discrete Mathematics
(e) . Journal of Algebra and Its Applications
(f). Revista de la real academia de Ciencias Exactas, Flsicas y Naturales. Serie A. Matematicas
(g). Electronic Journal of Graph Theory and Applications (EJGTA)
(h). Quasigroups and Related Systems
(i). Open Mathematics
(j). Science Asia
(k). Algebra Colloquium
(l). South East Asian Journal of Mathematics and Mathematical Sciences
(m). Bulletin of the Malaysian Mathematical Sciences Society.
(n). Linear and Multililinear Algebra.
(o). Communications in Algebra