%0 Journal Article %A S. I. Kadchenko %A L. S. Ryazanova %A I. E. Kadchenko %T Algorithms for calculating eigenvalues of discrete semi-bounded operators defined on quantum graphs of star type with variable edges %J Vestnik Ûžno-Uralʹskogo gosudarstvennogo universiteta. Seriâ, Matematičeskoe modelirovanie i programmirovanie %D 2024 %P 51-65 %V 17 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/VYURU_2024_17_4_a4/ %G ru %F VYURU_2024_17_4_a4