@article{DEMR_2018_9_a1,
     author = {M. G. Magomed-Kasumov and S. R. Magomedov},
     title = {Fast computation of linear combinations of {Sobolev} functions generated by the {Haar} functions},
     journal = {Daghestan Electronic Mathematical Reports},
     pages = {7--14},
     publisher = {mathdoc},
     volume = {9},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DEMR_2018_9_a1/}
}