%0 Journal Article %A Arkadiusz Lewandowski %T An extension theorem with analytic singularities for generalized $(N,k)$-crosses %J Annales Polonici Mathematici %D 2012 %P 193-208 %V 103 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap103-2-7/ %R 10.4064/ap103-2-7 %G en %F 10_4064_ap103_2_7