Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1981_29_5_a9, author = {A. N. Davidchik and A. A. Ligun}, title = {Precise constants in inequalities of {Jackson} type}, journal = {Matemati\v{c}eskie zametki}, pages = {761--769}, publisher = {mathdoc}, volume = {29}, number = {5}, year = {1981}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1981_29_5_a9/} }
A. N. Davidchik; A. A. Ligun. Precise constants in inequalities of Jackson type. Matematičeskie zametki, Tome 29 (1981) no. 5, pp. 761-769. http://geodesic.mathdoc.fr/item/MZM_1981_29_5_a9/