Voir la notice de l'article provenant de la source Mathematicac Balkanica website
@article{MABA_1990_4_3-4_a15, author = {Gancho T. Tachev}, title = {A {Direct} {Theorem} for the {Best} {Algebraic} {Approximation} in {Lp[-1,1],} (0<p<1)}, journal = {Mathematica balkanica}, pages = {381}, publisher = {mathdoc}, volume = {4}, number = {3-4}, year = {1990}, url = {http://geodesic.mathdoc.fr/item/MABA_1990_4_3-4_a15/} }
Gancho T. Tachev. A Direct Theorem for the Best Algebraic Approximation in Lp[-1,1], (0