12 citations to https://www.mathnet.ru/eng/fpm1777
V. A. Kibkalo, “Noncompactness property of fibers and singularities of non-Euclidean Kovalevskaya system on pencil of Lie algebras”, Moscow University Mathematics Bulletin, Moscow University Måchanics Bulletin, 75:6 (2020), 263–267
S. E. Pustovoytov, “Topological analysis of a billiard in elliptic ring in a potential field”, J. Math. Sci., 259:5 (2021), 712–729