@article{AA_2012_24_4_a8,
     author = {K. Yu. Fedorovskiy},
     title = {On $\mathcal C^m$-approximability of functions by polynomial solutions of elliptic equations on compact plane sets},
     journal = {Algebra i analiz},
     pages = {201--219},
     year = {2012},
     volume = {24},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2012_24_4_a8/}
}