%0 Journal Article %A A. Boivin %A P. M. Gauthier %A P. V. Paramonov %T On uniform approximation by $n$-analytic functions on closed sets in~$\mathbb C$ %J Izvestiya. Mathematics %D 2004 %P 447-459 %V 68 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_2004_68_3_a2/ %G en %F IM2_2004_68_3_a2