TY JOUR TI On the stability of circular reinforced arches in the case of spatial deformation KW stability KW circular arch KW variational problem KW bifurcation points KW one-sided constraints KW critical force JO Proceedings of the Komi Science Centre of the Ural Division of the Russian Academy of Sciences AU Andryukova, V.Y. AU Tarasov, V.N. PY 2024 IS 0 PB FSBI FIC "Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences"