1. 2004
  2. 2002
  3. Математика. Варианты 2002 года

    Черняев, П. К., Беккер, Б. М., Бибиков, Ю. Н., Ильин, Ю. А., Макеев, В. В., Нецветаев, Н. Ю., Осипов, А. В. & Чурин, Ю. В., 31 Dec 2002, СПб, Первая линия. 34 p.

    Research output: Book/Report/AnthologyTeaching materialsEducationpeer-review

  4. Stability of zero solutions of essentially nonlinear one-degree-of-freedom Hamiltonian and reversible systems

    Bibikov, Y. N., 1 Dec 2002, In: Differential Equations. 38, 5, p. 609-614 6 p.

    Research output: Contribution to journalArticlepeer-review

  5. Математика. Варианты 2001 года

    Черняев, П. К., Беккер, Б. М., Осипов, А. В., Бибиков, Ю. Н., Нецветаев, Н. Ю. & Чурин, Ю. В., 8 Apr 2002, СПб, Первая линия. 26 p.

    Research output: Book/Report/AnthologyTeaching materialsEducationpeer-review

  6. 2000
  7. Bifurcation of an equilibrium for a system of differential equations in the critical case of two pure imaginary and two zero roots of the characteristic equation: I

    Basov, V. V. & Bibikov, Y. N., 1 Jan 2000, In: Differential Equations. 36, 1, p. 30-38 9 p.

    Research output: Contribution to journalArticlepeer-review

  8. 1999
  9. Stability and bifurcation for periodic perturbations of the equilibrium of an oscillator with infinite or infinitesimal oscillation frequency

    Bibikov, Y. N., 1 Jan 1999, In: Mathematical Notes. 65, 3-4, p. 269-279 11 p.

    Research output: Contribution to journalArticlepeer-review

  10. 1997
  11. On the stability of an equilibrium in a case of a periodically perturbed center

    Basov, V. V. & Bibikov, Y. N., 1 May 1997, In: Differential Equations. 33, 5, p. 587-590 4 p.

    Research output: Contribution to journalArticlepeer-review

  12. Conservation and bifurcation of an invariant torus of a vector field

    Bibikov, Y. N., 1 Jan 1997, In: Mathematical Notes. 61, 1-2, p. 29-37 9 p.

    Research output: Contribution to journalArticlepeer-review

  13. Об устойчивости положения равновесия в одном случае периодического возмущения центра

    Басов, В. В. & Бибиков, Ю. Н., 1997, In: ДИФФЕРЕНЦИАЛЬНЫЕ УРАВНЕНИЯ. 33, 5, p. 583-586

    Research output: Contribution to journalArticlepeer-review

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