В. В. Козлов, “Неустойчивость равновесий в соленоидальном силовом поле”, Матем. заметки, 113:2 (2023), 207–216 ; V. V. Kozlov, “Instability of Equilibria in a Solenoidal Force Field”, Math. Notes, 113:2 (2023), 220–227
В. В. Козлов, “Неаналитические первые интегралы аналитических систем дифференциальных уравнений в окрестности устойчивых положений равновесия”, Дифференц. уравнения, 59:6 (2023), 843–846 ; V. V. Kozlov, “Nonanalytic first integrals of analytic systems of differential equations in a neighborhood of stable equilibria”, Differ. Equ., 59 (2023), 862–865
Valery V. Kozlov, “On the Integrability of Circulatory Systems”, Regul. Chaotic Dyn., 27:1 (2022), 11–17
Misael Avendaño-Camacho, Claudio César García-Mendoza, José Crispín Ruiz-Pantaleón, Eduardo Velasco-Barreras, “Geometrical Aspects of the Hamiltonization Problem of Dynamical Systems”, SIGMA, 18 (2022), 038, 29 pp.
V. V. Kozlov, “On instability in systems with an integral invariant”, Differ. Equ., 58:10 (2022), 1427–1431
Valery V. Kozlov, “Integrals of Circulatory Systems Which are Quadratic in Momenta”, Regul. Chaotic Dyn., 26:6 (2021), 647–657