Geodesic
A direct theorem on approximation “by angle” in the spaces $L_p$, $0$
Matematičeskie zametki, Tome 52 (1992) no. 5, pp. 93-96 
K. V. Runovskii. A direct theorem on approximation “by angle” in the spaces $L_p$, $0
@article{MZM_1992_52_5_a13,
     author = {K. V. Runovskii},
     title = {A direct theorem on approximation {\textquotedblleft}by angle{\textquotedblright} in the spaces $L_p$, $0<p<1$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {93--96},
     year = {1992},
     volume = {52},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1992_52_5_a13/}
}
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