%0 Journal Article %A A. M. Akhtyamov %T Calculating the Coefficients of the Expansion in Derived Keldysh Chains for an Elliptic Problem with Parameter in the Boundary Condition %J Matematičeskie zametki %D 2001 %P 622-625 %V 69 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_2001_69_4_a9/ %G ru %F MZM_2001_69_4_a9