@article{ZNSL_1976_59_a5,
     author = {V. L. Oleinik},
     title = {Estimates for the $n$-widths of compact sets of differentiate functions in spaces with weight functions},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {117--132},
     publisher = {mathdoc},
     volume = {59},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1976_59_a5/}
}