Geodesic extensions of mechanical systems with nonholonomic constraints

Source
Journal of nonlinear science - ISSN 0938-8974-35:2 (2025) p. 1-45

Recent examples of hypersemitoric systems and first steps towards a classification : a brief survey

Source
Women in analysis and PDE: GFOW APDEGS 2022 2021-5 (2024) p. 187-195