[en] Magnetooptical measurements have been performed on β''-(BEDT-TTF)(TCNQ) using the cavity perturbation techniques. β''-(BEDT-TTF)(TCNQ) has very exotic Fermi surface (FS). Several harmonic resonances were observed at various angles. We consider these resonances as q1D-periodic orbit resonance. The obtained Fermi velocity and the scattering time are 4.4x10⁴ m/s and 2.1x10^-11 s, respectively. When the magnetic field was rotated in the b^*a-plane, the similar resonances are observed. According to these results, the FS topology of the system at low temperature is discussed

[en] With 1D and 2D organic compounds as examples, it is shown that for stabilization of the charge ordered state the appropriate reorganization of anion and molecular sublattices is necessary