TY  - JOUR
AU  - S. M. Kozlov
TI  - A criterion for instability of systems of linear equations
JO  - Funkcionalʹnyj analiz i ego priloženiâ
PY  - 1987
SP  - 81
EP  - 82
VL  - 21
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/FAA_1987_21_3_a11/
LA  - ru
ID  - FAA_1987_21_3_a11
ER  -