Geodesic
Multivariate Birkhoff-Lagrange Interpolation Schemes and Cartesian Sets of Nodes
Acta mathematica Universitatis Comenianae, Tome 73 (2004) no. 2 
N. Crainic. Multivariate Birkhoff-Lagrange Interpolation Schemes and Cartesian Sets of Nodes. Acta mathematica Universitatis Comenianae, Tome 73 (2004) no. 2. http://geodesic.mathdoc.fr/item/AMUC_2004_73_2_a8/
@article{AMUC_2004_73_2_a8,
     author = {N. Crainic},
     title = {Multivariate {Birkhoff-Lagrange} {Interpolation} {Schemes} and {Cartesian} {Sets} of {Nodes}},
     journal = {Acta mathematica Universitatis Comenianae},
     year = {2004},
     volume = {73},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/AMUC_2004_73_2_a8/}
}
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Voir la notice de l'article provenant de la source Comenius University

In this paper we study the relevance of cartesian shapes to the solvability of Birkhoff-Lagrange interpolation schemes.