Lovejkin, Yu. V.; Parasyuk, I. O. A theorem on perturbation of coisotropic invariant tori of locally Hamiltonian systems and its application. (Ukrainian) Zbl 1107.37050 Nelinijni Kolyvannya 8, No. 4, 490-515 (2005). Reviewer: Julia A. Martynyuk (Kyïv) MSC: 37J40 37K55 37N20 PDFBibTeX XMLCite \textit{Yu. V. Lovejkin} and \textit{I. O. Parasyuk}, Neliniĭni Kolyvannya 8, No. 4, 490--515 (2005; Zbl 1107.37050)
Lovejkin, Yu. V.; Parasyuk, I. O. General KAM theorem for coisotropic invariant tori of Hamiltonian systems. (Ukrainian. English summary) Zbl 1066.37043 Visn., Mat. Mekh., Kyïv. Univ. Im. Tarasa Shevchenka 2004, No. 11, 53-58 (2004). MSC: 37K55 PDFBibTeX XMLCite \textit{Yu. V. Lovejkin} and \textit{I. O. Parasyuk}, Visn., Mat. Mekh., Kyïv. Univ. Im. Tarasa Shevchenka 2004, No. 11, 53--58 (2004; Zbl 1066.37043)