%0 Journal Article %A N. S. Grigor'eva %T She two-scales expansions method for weak irregular ocean waveguides perturbed by current %J Zapiski Nauchnykh Seminarov POMI %D 1985 %P 68-78 %V 148 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1985_148_a7/ %G ru %F ZNSL_1985_148_a7