%0 Journal Article %A R. R. Gadyl'shin %T Characteristic frequencies of bodies with thin spikes.~I. Convergence and estimates %J Matematičeskie zametki %D 1993 %P 10-21 %V 54 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1993_54_6_a1/ %G ru %F MZM_1993_54_6_a1