%0 Journal Article %A M. Yu. Nalimov %T The perturbation expansion and goldstone singularities in the ordered phase of the $O_n$-symmetrical $\mathbf \Phi^4$-theory in half space %J Teoretičeskaâ i matematičeskaâ fizika %D 1995 %P 223-236 %V 102 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1995_102_2_a5/ %G ru %F TMF_1995_102_2_a5