%0 Journal Article %A O. B. Arushanyan %A S. F. Zaletkin %T To the orthogonal expansion theory of the solution to the Cauchy problem for second-order ordinary differential equations %J Numerical methods and programming %D 2018 %P 178-184 %V 19 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMP_2018_19_2_a5/ %G ru %F VMP_2018_19_2_a5