@article{ZVMMF_1963_3_5_a0,
     author = {N. P. Zhidkov},
     title = {Some comments concerning the conditionally of systems of linear algebraic equations},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {803--811},
     year = {1963},
     volume = {3},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1963_3_5_a0/}
}