%0 Journal Article %A Waldemar PopiƄski %T On least squares discrete Fourier analysis of unequally spaced data %J Applicationes Mathematicae %D 2020 %P 207-224 %V 47 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/am2399-6-2020/ %R 10.4064/am2399-6-2020 %G en %F 10_4064_am2399_6_2020