%0 Journal Article %A Alexei V. Penskoi %T Isoperimetric Inequalities for Higher Eigenvalues of the Laplace--Beltrami Operator on Surfaces %J Informatics and Automation %D 2019 %P 291-308 %V 305 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_2019_305_a15/ %G ru %F TRSPY_2019_305_a15