@article{DAN_1996_350_1_a6,
     author = {P. L. Ul'yanov},
     title = {On {Fourier{\textendash}Haar} series of superpositions of functions},
     journal = {Doklady Akademii Nauk},
     pages = {25--28},
     year = {1996},
     volume = {350},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1996_350_1_a6/}
}