- I. G. Tsar’kov, “Geometry of the Singular Set of Hypersurfaces and the Eikonal Equation”, Russ. J. Math. Phys., 29, № 2, 2022, 240
- I. G. Tsar’kov, “The Geometry of a Singular Set of Hypersurfaces and the Eikonal Equation”, Math Notes, 108, № 3-4, 2020, 426
- A. R. Alimov, “Singularities of Solutions of the Eikonal Equation”, Diff Equat, 55, № 10, 2019, 1311
- Igor' Germanovich Tsar'kov, “Гладкие решения уравнения эйконала и поведение локальных минимумов функции расстояния”, Известия Российской академии наук. Серия математическая, 83, № 6, 2019, 167
- Igor' Germanovich Tsar'kov, “Геометрия особого множества гиперповерхностей
и уравнение эйконала”, Математические заметки, 108, № 3, 2020, 441
- A. R. Alimov, “Monotone Path-Connectedness of Strict Suns”, Lobachevskii J Math, 43, № 3, 2022, 519
- I. G. Tsar’kov, “Smoothness of Solutions of the Eikonal Equation and Regular Points of Their Level Surfaces”, Russ. J. Math. Phys., 30, № 2, 2023, 259
- I. G. Tsar’kov, “Smooth solutions of the eikonal equation and the behaviour of local minima of the distance function”, Izv. Math., 83, № 6, 2019, 1234
- A. R. Alimov, “Solarity of Chebyshev Sets in Dual Spaces and Uniquely Remotal Sets”, Lobachevskii J Math, 42, № 4, 2021, 785