Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1979_25_1_a10, author = {V. A. Yudin}, title = {A~lower bound for {Lebesgue} constants}, journal = {Matemati\v{c}eskie zametki}, pages = {119--122}, publisher = {mathdoc}, volume = {25}, number = {1}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1979_25_1_a10/} }
V. A. Yudin. A~lower bound for Lebesgue constants. Matematičeskie zametki, Tome 25 (1979) no. 1, pp. 119-122. http://geodesic.mathdoc.fr/item/MZM_1979_25_1_a10/