@article{ZNSL_2015_434_a1,
     author = {P. A. Andrianov},
     title = {Sharp estimates of the deviation from {Fourier{\textendash}Haar} sums for continuous functions of two variables},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {19--31},
     year = {2015},
     volume = {434},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2015_434_a1/}
}