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Gray, Henry L.; Zhang, Nien fan On a new definition of the fractional difference. (English) Zbl 0648.39002 Math. Comput. 50, No. 182, 513-519 (1988). Reviewer: J.Gregor MSC: 39A70 39A12 47B39 PDFBibTeX XMLCite \textit{H. L. Gray} and \textit{N. f. Zhang}, Math. Comput. 50, No. 182, 513--519 (1988; Zbl 0648.39002) Full Text: DOI