%0 Journal Article %A R. G. Shakirov %T On the solution of a boundary value problem for a fourth-order equation of mixed-composite type with two lines of degeneracy %J Trudy seminara po kraevym zadačam %D 1984 %P 224-232 %V 21 %N 21 %I mathdoc %U http://geodesic.mathdoc.fr/item/KUKZ_1984_21_21_a26/ %G ru %F KUKZ_1984_21_21_a26