%0 Journal Article %A V. V. Karachik %T The biharmonic Neumann problem with double involution %J Vestnik Ûžno-Uralʹskogo gosudarstvennogo universiteta. Seriâ, Matematika, mehanika, fizika %D 2024 %P 18-26 %V 16 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/VYURM_2024_16_3_a2/ %G ru %F VYURM_2024_16_3_a2