%0 Journal Article %A Bukovská, Z. %A Šalát, T. %T Topological results on sequences $\{n_k x\}^\infty_{k=1}$ and their applications in the theory of trigonometric series %J Czechoslovak Mathematical Journal %D 1993 %P 115-123 %V 43 %N 1 %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1993.128387/ %R 10.21136/CMJ.1993.128387 %G en %F 10_21136_CMJ_1993_128387