@article{IVM_2024_1_a1,
     author = {R. Z. Dautov},
     title = {Theorems on direct and inverse approximation by algebraic polynomials and piecewise polynomials in the spaces $H^m(a, b)$ and $B^s_{2,q}(a, b)$},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {14--34},
     year = {2024},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2024_1_a1/}
}