@article{M2AN_2019__53_3_987_0,
     author = {Canuto, Claudio and Nochetto, Ricardo H. and Stevenson, Rob P. and Verani, Marco},
     title = {A saturation property for the {spectral-Galerkin} approximation of a {Dirichlet} problem in a square},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis },
     pages = {987--1003},
     publisher = {EDP-Sciences},
     volume = {53},
     number = {3},
     year = {2019},
     doi = {10.1051/m2an/2019015},
     zbl = {1426.65187},
     mrnumber = {3969160},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/m2an/2019015/}
}