@article{SM_1995_83_2_a7,
     author = {I. G. Tsar'kov},
     title = {Smoothing of abstract functions},
     journal = {Sbornik. Mathematics},
     pages = {405--430},
     publisher = {mathdoc},
     volume = {83},
     number = {2},
     year = {1995},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1995_83_2_a7/}
}