Geodesic
On $\mathcal C^m$-approximability of functions by polynomial solutions of elliptic equations on compact plane sets
Algebra i analiz, Tome 24 (2012) no. 4, pp. 201-219.

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K. Yu. Fedorovskiy. On $\mathcal C^m$-approximability of functions by polynomial solutions of elliptic equations on compact plane sets. Algebra i analiz, Tome 24 (2012) no. 4, pp. 201-219. http://geodesic.mathdoc.fr/item/AA_2012_24_4_a8/

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