@article{IVM_1982_10_a5,
     author = {A. A. Ligun and A. A. Shumeiko},
     title = {Optimal reconstruction of functions on classes $W^r_p$},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {37--39},
     publisher = {mathdoc},
     number = {10},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1982_10_a5/}
}