%0 Journal Article %A O. A. Kuvshinov %T About the geometry of the Cassini oval, its non-convexity degree and $\varepsilon$-offset layer %J Izvestiya Instituta Matematiki i Informatiki Udmurtskogo Gosudarstvennogo Universiteta %D 2022 %P 34-57 %V 60 %I mathdoc %U http://geodesic.mathdoc.fr/item/IIMI_2022_60_a2/ %G ru %F IIMI_2022_60_a2