@article{VMUMM_1994_1_a1,
     author = {M. A. Vorob'eva},
     title = {Approximation of functions by {Newtonian} potentials},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {6--11},
     publisher = {mathdoc},
     number = {1},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1994_1_a1/}
}