TY  - JOUR
AU  - A. S. Markus
TI  - Eigenvalues and singular values of the sum and product of linear operators
JO  - Doklady Akademii Nauk
PY  - 1962
SP  - 34
EP  - 36
VL  - 146
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1962_146_1_a8/
LA  - ru
ID  - DAN_1962_146_1_a8
ER  -