Geodesic
Approximation of functions by algebraic polynomials in the metric $L_p$ for $0$
Matematičeskie zametki, Tome 30 (1981) no. 3, pp. 321-332 
L. B. Khodak. Approximation of functions by algebraic polynomials in the metric $L_p$ for $0
@article{MZM_1981_30_3_a0,
     author = {L. B. Khodak},
     title = {Approximation of functions by algebraic polynomials in the metric~$L_p$ for $0<p<1$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {321--332},
     year = {1981},
     volume = {30},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1981_30_3_a0/}
}
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