%0 Journal Article %A V. I. Anisimov %A V. N. Gridin %T Methods for calculating zero-level instability of electronic circuits under variations in parameters and external disturbances %J Doklady Rossijskoj akademii nauk. Matematika, informatika, processy upravleniâ %D 2020 %P 51-56 %V 493 %U http://geodesic.mathdoc.fr/item/DANMA_2020_493_a10/ %G ru %F DANMA_2020_493_a10