"P(GA205/07/0052), P(GP205/06/P415), Z(AV0Z10030501), Z(MSM4781305903)" . . "RIV/67985815:_____/09:00338102!RIV10-AV0-67985815" . "000266730500018" . . "2" . "[EFAC2BA59BF2]" . "We study the properties of twin kilohertz quasiperiodic oscillations (QPOs) with a simple toy model consisting of two oscillation modes coupled with a general nonlinear force. We examine resonant effects by slowly varying the values of the tunable, and nearly commensurable, eigenfrequencies." . "Abramowicz, M. A." . "Internal resonance in nonlinear disk oscillations and the amplitude evolution of neutron-star kilohertz QPOs"@en . . . "Kluzniak, W." . "Astronomy and Astrophysics" . . "We study the properties of twin kilohertz quasiperiodic oscillations (QPOs) with a simple toy model consisting of two oscillation modes coupled with a general nonlinear force. We examine resonant effects by slowly varying the values of the tunable, and nearly commensurable, eigenfrequencies."@en . "320067" . "Hor\u00E1k, Ji\u0159\u00ED" . . . "T\u00F6r\u00F6k, G." . "RIV/67985815:_____/09:00338102" . "6"^^ . . . "0004-6361" . "1"^^ . . . "499" . "Internal resonance in nonlinear disk oscillations and the amplitude evolution of neutron-star kilohertz QPOs" . . . "5"^^ . . "Rebusco, P." . "X-rays; neutron stars; accretion disks"@en . "Internal resonance in nonlinear disk oscillations and the amplitude evolution of neutron-star kilohertz QPOs"@en . . . "Internal resonance in nonlinear disk oscillations and the amplitude evolution of neutron-star kilohertz QPOs" . . "FR - Francouzsk\u00E1 republika" . . .