@article{ZNSL_1973_35_a1,
     author = {Yu. K. Demjanovich and S. G. Mikhlin},
     title = {On a~net approximation of functions of {Sobolev} spaces},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {6--11},
     publisher = {mathdoc},
     volume = {35},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1973_35_a1/}
}