@article{SM_2004_195_3_a5,
     author = {V. Sh. Tsagareishvili},
     title = {Variation of {Fourier--Haar} coefficients},
     journal = {Sbornik. Mathematics},
     pages = {441--457},
     publisher = {mathdoc},
     volume = {195},
     number = {3},
     year = {2004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2004_195_3_a5/}
}