| Conservation of multidimensional invariant tori of Hamiltonian systems IO Parasyuk Ukrainian Mathematical Journal 36 (4), 380-385, 1984 | 46 | 1984 |
| Generalized and classical almost periodic solutions of Lagrangian systems SF Zakharin, IO Parasyuk FUNKCIALAJ EKVACIOJ SERIO INTERNACIA 42 (3), 325-338, 1999 | 33 | 1999 |
| Conservation of quasiperiodic motions in reversible multifrequency systems IO Parasyuk Dokl. Akad. Nauk Ukrain. SSR. Ser. A 9, 19-22, 1982 | 33 | 1982 |
| Coisotropic invariant tori of Hamiltonian systems of the quasiclassical theory of motion of a conduction electron IO Parasyuk Ukrainian Mathematical Journal 42 (3), 308-312, 1990 | 17 | 1990 |
| Integral representation of solutions to boundary-value problems on the half-line for linear ODEs with singularity of the first kind. Y Horishna, I Parasyuk, L Protsak Electronic Journal of Differential Equations (EJDE)[electronic only] 2008 …, 2008 | 12 | 2008 |
| Zones of instability of the Schrödinger equation with a smooth quasiperiodic potential IO Parasyuk Ukrainian Mathematical Journal 30 (1), 50-56, 1978 | 11 | 1978 |
| Dynamical bifurcation of multi-frequency oscillations in a fast-slow system AM Samoilenko, IO Parasyuk, BV Repeta arXiv preprint arXiv:1503.02000, 2015 | 10 | 2015 |
| Bifurcation of a Whitney-smooth family of coisotropic invariant tori of a Hamiltonian system under small deformations of a symplectic structure AA Kubichka, IO Parasyuk Ukrainian Mathematical Journal 53 (5), 701-718, 2001 | 10 | 2001 |
| Bifurcation of a Cantor set of coisotropic invariant tori of Hamiltonian systems under perturbation of symplectic structure IO Parasyuk Nelin. Kolyvannya 1 (2), 81-89, 1998 | 8 | 1998 |
| Variables of the action-angle type on symplectic manifolds stratified by coisotropic tori IO Parasyuk Ukrainian Mathematical Journal 45 (1), 85-93, 1993 | 8 | 1993 |
| Differential Equations [in Ukrainian] AM Samoilenko, MO Perestyuk, IO Parasyuk Lybid’, 2003 | 7 | 2003 |
| On smoothness of generalized quasiperiodic solutions of Lagrangian systems on Riemannian manifolds of nonpositive curvature SF Zakharin, IO Parasyuk Nonlinear Oscil.(Nelinijni Kolyvannya) 2, 180-193, 1999 | 7 | 1999 |
| Variational approach for weak quasiperiodic solutions of quasiperiodically excited Lagrangian systems on Riemannian manifolds I Parasyuk, A Rustamova Electronic Journal of Differential Equations 2012 (66), 1-22, 2012 | 6 | 2012 |
| Generalized quasiperiodic solutions of Lagrangian systems on Riemannian manifolds of nonpositive curvature SF Zakharin, IO Parasyuk Bull. Kyiv. Univ.(Visnyk Kyiv. Univ.), 15-20, 1999 | 6 | 1999 |
| Perturbations of degenerate coisotropic invariant tori of Hamiltonian systems IO Parasyuk Ukrainian Mathematical Journal 50 (1), 83-99, 1998 | 6 | 1998 |
| Reduction and coisotropic invariant tori of Hamiltonian systems with non-poisson commutative symmetries. I IO Parasyuk Ukrainian Mathematical Journal 46 (5), 572-580, 1994 | 6 | 1994 |
| Existence of V-bounded solutions for nonautonomous nonlinear systems via the Wazewski topological principle V Lagoda, I Parasyuk arXiv preprint arXiv:0911.4643, 2009 | 5 | 2009 |
| Theorem on perturbation of coisotropic invariant tori of locally Hamiltonian systems and its applications YV Loveikin, IO Parasyuk Nonlinear Oscillations 8 (4), 487-512, 2005 | 5 | 2005 |
| DiferentsIalnI rivnyannya [Differential equations.] AM Samoylenko, MO Perestyuk, IO Parasyuk K.: LibId, 2003 | 5 | 2003 |
| On the preservation of coisotropic invariant tori of locally Hamiltonian systems IO Parasyuk Some Problems of the Theory of Asymptotic Methods of Nonlinear Mechanics …, 1986 | 5 | 1986 |