@article{ZNSL_1979_90_a10,
     author = {D. K. Faddeev},
     title = {On the evaluation of a~domain containing the solution of linear algebraic system},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {227--228},
     publisher = {mathdoc},
     volume = {90},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1979_90_a10/}
}