@article{TRSPY_1959_53_a19,
     author = {D. K. Faddeev},
     title = {On the conditionality of matrices},
     journal = {Informatics and Automation},
     pages = {387--391},
     publisher = {mathdoc},
     volume = {53},
     year = {1959},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1959_53_a19/}
}