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@ARTICLE{Dahmen:185555,
      author       = {Dahmen, Wolfgang},
      title        = {{T}rigonometric approximation with exponential error
                      orders. {I}. {C}onstruction of asymptotically optimal
                      processes; generalized de la {V}allée {P}oussin {S}ums},
      journal      = {Mathematische Annalen},
      volume       = {230},
      issn         = {0025-5831},
      address      = {Berlin ; Göttingen ; Heidelberg},
      publisher    = {Springer},
      reportid     = {RWTH-CONV-062020},
      pages        = {57-74},
      year         = {1977},
      cin          = {111410 / 110000},
      cid          = {$I:(DE-82)111410_20140620$ / $I:(DE-82)110000_20140620$},
      typ          = {PUB:(DE-HGF)16},
      url          = {https://publications.rwth-aachen.de/record/185555},
}