@article{MoessnerSissouno2016,
  author    = {Bernhard M{\"o}{\"s}ner and Nada Sissouno},
  title     = {A note on tensor product spline approximation via extension operators},
  journal   = {Ja{\'e}n journal on approximation : revista matem{\´a}tica internacional},
  volume    = {8},
  number    = {1},
  pages     = {27 -- 32},
  year        = {2016},
}