%0 Journal Article %A A. A. Klyachin %T Construction of $C^1$-smooth piecewise quadratic functions for solving boundary value problems of 4th order equations %J Matematičeskaâ fizika i kompʹûternoe modelirovanie %D 2022 %P 5-14 %V 25 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/VVGUM_2022_25_3_a0/ %G ru %F VVGUM_2022_25_3_a0