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De Cicco, Virginia; Marino, Giuseppe Composition operators on summable functions spaces. (English) Zbl 0724.47015 Matematiche 44, No. 1, 3-19 (1989). MSC: 47B38 46E30 46E35 PDFBibTeX XMLCite \textit{V. De Cicco} and \textit{G. Marino}, Matematiche 44, No. 1, 3--19 (1989; Zbl 0724.47015)