@Article{         Babuska_1969aa,
  author        = {Babuška, Ivo},
  citable       = {1},
  doi           = {10.1007/BF02165003},
  file          = {Babuska_1969aa.pdf},
  group         = {casper},
  internal      = {0},
  issn          = {0945-3245},
  journal       = {Journal of Numerical Mathematics},
  keywords      = {error,fem},
  langid        = {english},
  number        = {4},
  pages         = {322--333},
  title         = {Error-bounds for finite element method},
  volume        = {16},
  year          = {1969},
  shortjournal  = {J. Numer. Math.}
}

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