@article{SM_1975_27_3_a3,
     author = {\`E. A. Storozhenko and V. G. Krotov and P. Oswald},
     title = {Direct and converse theorems of {Jackson} type in $L^p$ spaces, $0<p<1$},
     journal = {Sbornik. Mathematics},
     pages = {355--374},
     publisher = {mathdoc},
     volume = {27},
     number = {3},
     year = {1975},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1975_27_3_a3/}
}