The long-term light curves of the novalikes TT Ari, KR Aur, AM Her and MV Lyr, were compiled and analysed for solar-like cyclical behaviour. The frequency analysis showed long-term cyclical modulations of the brightness of the stars, which can be ascribed to changes of the radii of the late type secondaries in order of ΔR/R ≃ 10 -4-10 -5.

• ZDRAVKA KRAICHEVA(Institute of Astronomy, Bulgarian Academy of Sciences)
• VALLERY STANISHEV(Institute of Astronomy, Bulgarian Academy of Sciences)
• VASIL POPOV(Institute of Astronomy, Bulgarian Academy of Sciences)
• IGLIKA SPASSOVSKA(Korea Astronomy Observatory)