%0 Journal Article %A E. A. Kalita %T Singular solutions of higher-order non-linear elliptic systems %J Sbornik. Mathematics %D 2004 %P 1607-1638 %V 195 %N 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_2004_195_11_a3/ %G en %F SM_2004_195_11_a3