%0 Journal Article %A Waldemar PopiƄski %T On discrete Fourier spectrum of a harmonic with random frequency modulation %J Applicationes Mathematicae %D 2013 %P 99-108 %V 40 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/am40-1-6/ %R 10.4064/am40-1-6 %G en %F 10_4064_am40_1_6