Voir la notice de l'article provenant de la source Mathematicac Balkanica website
@article{MABA_1996_10_1_a7, author = {B. Bojanov}, title = {A {Jackson} {Type} {Theorem} for {Tchebycheff} {Systems}}, journal = {Mathematica balkanica}, pages = {73}, publisher = {mathdoc}, volume = {10}, number = {1}, year = {1996}, url = {http://geodesic.mathdoc.fr/item/MABA_1996_10_1_a7/} }
B. Bojanov. A Jackson Type Theorem for Tchebycheff Systems. Mathematica balkanica, Tome 10 (1996) no. 1, p. 73. http://geodesic.mathdoc.fr/item/MABA_1996_10_1_a7/