@article{IVM_1987_11_a6,
     author = {V. I. Meleshko and V. M. Zadachin},
     title = {Factorizations and pseudo-inversions of singular perturbed matrices with nonfixed signs},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {42--50},
     publisher = {mathdoc},
     number = {11},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1987_11_a6/}
}