@article{ZVMMF_2008_48_5_a0,
     author = {E. V. Lebedeva and S. G. Solodkii},
     title = {Approximation of finite-section equations by piecewise constant functions},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {731--745},
     year = {2008},
     volume = {48},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_2008_48_5_a0/}
}