@article{DAN_1992_322_1_a8,
     author = {K. V. Runovskii},
     title = {On approximation ``by an angle'' in $L_p$ spaces, $0<p<1$},
     journal = {Doklady Akademii Nauk},
     pages = {45--47},
     publisher = {mathdoc},
     volume = {322},
     number = {1},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1992_322_1_a8/}
}