Voir la notice de l'article provenant de la source Math-Net.Ru
@article{TRSPY_1987_180_a28, author = {Yu. A. Brudnyi and P. A. Shvartsman}, title = {Extension of functions with preservation of smoothness}, journal = {Informatics and Automation}, pages = {60--61}, publisher = {mathdoc}, volume = {180}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TRSPY_1987_180_a28/} }
Yu. A. Brudnyi; P. A. Shvartsman. Extension of functions with preservation of smoothness. Informatics and Automation, Theory of functions and related questions of analysis, Tome 180 (1987), pp. 60-61. http://geodesic.mathdoc.fr/item/TRSPY_1987_180_a28/