@article{RM_1965_20_6_a17,
     author = {V. M. Kirzhner},
     title = {A~criterion for the representability of a~matrix in the form of a~product of a~lower-triangular and an upper-trianglar matrix},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     year = {1965},
     volume = {20},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1965_20_6_a17/}
}