@article{DAN_1993_331_6_a8,
     author = {K. V. Runovskii},
     title = {Direct and inverse theorems of approximation theory in the spaces $L_p$, $0<p<1$},
     journal = {Doklady Akademii Nauk},
     pages = {684--686},
     publisher = {mathdoc},
     volume = {331},
     number = {6},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1993_331_6_a8/}
}