@article{IVM_2006_7_a5,
     author = {M. G. Plotnikov},
     title = {On the boundary of existence of uniqueness for two-dimensional {Haar} series},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {57--64},
     publisher = {mathdoc},
     number = {7},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2006_7_a5/}
}