@article{VMUMM_2007_4_a3,
     author = {A. V. Egorov},
     title = {Expansion over the signum system on a sigma-finite space},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {17--24},
     publisher = {mathdoc},
     number = {4},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2007_4_a3/}
}