@article{10_4064_sm_98_1_73_90,
     author = {Amos Ron},
     title = {A characterization of the approximation order for multivariate spline spaces},
     journal = {Studia Mathematica},
     pages = {73--90},
     publisher = {mathdoc},
     volume = {98},
     number = {1},
     year = {1991},
     doi = {10.4064/sm-98-1-73-90},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-98-1-73-90/}
}