@article{ZNSL_2004_315_a0,
     author = {A. B. Aleksandrov},
     title = {Approximation by {M.~Riesz's} kernels in $L^p$ for $p<1$},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {5--38},
     publisher = {mathdoc},
     volume = {315},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2004_315_a0/}
}