@article{VTAMU_2025_30_149_a4,
     author = {M. R. Langarshoev and S. S. Khorazmshoev},
     title = {On the best approximation of some classes of~periodic~functions~in~the space $L_{2}$},
     journal = {Vestnik rossijskih universitetov. Matematika},
     pages = {56--65},
     publisher = {mathdoc},
     volume = {30},
     number = {149},
     year = {2025},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VTAMU_2025_30_149_a4/}
}