Ashraf, M.; Jacob, V. W. On certain polynomial identities implying commutativity for rings. (English) Zbl 0988.16518 Acta Sci. Nat. Univ. Jilinensis 1996, No. 2, 13-17 (1996). MSC: 16U70 Center, normalizer (invariant elements) (associative rings and algebras) 16R50 Other kinds of identities (generalized polynomial, rational, involution) 16U80 Generalizations of commutativity (associative rings and algebras) PDFBibTeX XMLCite \textit{M. Ashraf} and \textit{V. W. Jacob}, Acta Sci. Nat. Univ. Jilinensis 1996, No. 2, 13--17 (1996; Zbl 0988.16518)