@article{ZVMMF_1992_32_11_a0,
     author = {I. A. Blatov and A. A. Terteryan},
     title = {Estimates of the elements of inverse matrices and pivotal condensation methods of incomplete block factorization},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1683--1696},
     publisher = {mathdoc},
     volume = {32},
     number = {11},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1992_32_11_a0/}
}