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Approximation in Sobolev spaces by piecewise affine interpolation

Bibliographic reference Van Schaftingen, Jean. Approximation in Sobolev spaces by piecewise affine interpolation. In: Journal of Mathematical Analysis and Applications, Vol. 420, no. 1, p. 40-47 (2014)
Permanent URL http://hdl.handle.net/2078.1/152134