@article{MZM_2021_109_5_a1,
     author = {K. Bitsadze},
     title = {On {Changes} of {Variable} that {Preserve} the {Absolute} {Convergence} of {Fourier--Haar} {Series} of {Continuous} {Functions}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {664--680},
     publisher = {mathdoc},
     volume = {109},
     number = {5},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2021_109_5_a1/}
}