TY  - JOUR
AU  - V. M. Brodskii
TI  - On operator nodes and their characteristic functions
JO  - Doklady Akademii Nauk
PY  - 1971
SP  - 16
EP  - 19
VL  - 198
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1971_198_1_a2/
LA  - ru
ID  - DAN_1971_198_1_a2
ER  -