Jonsson, Alf; Wallin, Hans The trace to closed sets of functions in \(R^ n\) with second difference of order 0(h). (English) Zbl 0451.41022 J. Approximation Theory 26, 159-184 (1979). MSC: 41A65 PDFBibTeX XMLCite \textit{A. Jonsson} and \textit{H. Wallin}, J. Approx. Theory 26, 159--184 (1979; Zbl 0451.41022) Full Text: DOI
Jonsson, Alf; Wallin, Hans A Whitney extension theorem in \(L^p\) and Besov spaces. (English) Zbl 0335.46024 Ann. Inst. Fourier 28, No. 1, 139-192 (1978). MSC: 46E35 PDFBibTeX XMLCite \textit{A. Jonsson} and \textit{H. Wallin}, Ann. Inst. Fourier 28, No. 1, 139--192 (1978; Zbl 0335.46024) Full Text: DOI EuDML