Geodesic
Quadrature formulas with minimum error for certain classes of functions
Matematičeskie zametki, Tome 3 (1968) no. 5, pp. 577-586 
G. K. Lebed'. Quadrature formulas with minimum error for certain classes of functions. Matematičeskie zametki, Tome 3 (1968) no. 5, pp. 577-586. http://geodesic.mathdoc.fr/item/MZM_1968_3_5_a10/
@article{MZM_1968_3_5_a10,
     author = {G. K. Lebed'},
     title = {Quadrature formulas with minimum error for certain classes of functions},
     journal = {Matemati\v{c}eskie zametki},
     pages = {577--586},
     year = {1968},
     volume = {3},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1968_3_5_a10/}
}
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Voir la notice de l'article provenant de la source Math-Net.Ru

Problems connected with optimum quadrature formulas for the function classes $H_\omega$ and $H_\omega^n$ are investigated.