Free Access
Volume 25, Number 4, 1991
Page(s) 425 - 440
Published online 31 January 2017
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  4. C. A. MICCHELLI and F. UTRERAS, Smoothing and interpolation in a convex subset of a Hilbert space, SIAM J. Sci. Statist. Comput, 9 (1988), 728-746. [MR: 945935] [Zbl: 0651.65046]
  5. R. T. ROCKAFELLAR, Convex Analysis, Princeton University Press, Princeton, N. J., 1970. [MR: 274683] [Zbl: 0193.18401]
  6. F. UTRERAS, Smoothing noisy data under monotonicity constraints existence, characterization and convergence, rates Numer. Math., 74 (1985), 611-625 [EuDML: 133054] [MR: 812623] [Zbl: 0606.65006]
  7. F. J. BEUTLER and W. L. ROOT, The operator pseudoinverse in control and systems identification, in Generalized Inverses and Applications, eds Z. Nashed, Academie Press, New York, 1973. [MR: 490311] [Zbl: 0367.93001]
  8. C. K. CHUI, F. DEUTSCH and J. D. WARD, Constrained best approximation in Hilbert space, Constr. Approx., 6 (1990), 35-64. [MR: 1027508] [Zbl: 0682.41034]
  9. N. DYN and W. H. WONG, On the characterization of non-negative volume matching surface splines, J. Approx. Theory, 31 (1987), 1-10. [MR: 906755] [Zbl: 0645.41010]

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