TY  - JOUR
AU  - P. N. Knyazev
TI  - A~necessary and sufficient condition for the comparability of operators
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1963
VL  - 18
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1963_18_4_a9/
LA  - ru
ID  - RM_1963_18_4_a9
ER  -