%0 Journal Article %A N. N. Yanenko %A E. V. Vorozhtsov %T On the theory of differential analyzers of contact discontinuities %J Doklady Akademii Nauk %D 1979 %P 48-52 %V 247 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1979_247_1_a10/ %G ru %F DAN_1979_247_1_a10