@article{IM2_2014_78_1_a4,
     author = {G. G. Oniani},
     title = {On the convergence of multiple {Haar} series},
     journal = {Izvestiya. Mathematics},
     pages = {90--105},
     year = {2014},
     volume = {78},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2014_78_1_a4/}
}