Geodesic
Unconditional convergence almost everywhere of Fourier series of continuous functions in the Haar system
Matematičeskie zametki, Tome 4 (1968) no. 2, pp. 211-220.

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A continuous function is constructed whose Haar-Fourier series, after a definite rearrangement of its terms, diverges almost everywhere. A function is also constructed which has the maximum degree of smoothness in the sense that if its smoothness is increased its Haar-Fourier series becomes unconditionally convergent almost everywhere. 
@article{MZM_1968_4_2_a12,
     author = {S. V. Bochkarev},
     title = {Unconditional convergence almost everywhere of {Fourier} series of continuous functions in the {Haar} system},
     journal = {Matemati\v{c}eskie zametki},
     pages = {211--220},
     publisher = {mathdoc},
     volume = {4},
     number = {2},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1968_4_2_a12/}
}
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S. V. Bochkarev. Unconditional convergence almost everywhere of Fourier series of continuous functions in the Haar system. Matematičeskie zametki, Tome 4 (1968) no. 2, pp. 211-220. http://geodesic.mathdoc.fr/item/MZM_1968_4_2_a12/