TY  - JOUR
AU  - M. E. Perel'man
TI  - Alternative properties of physical systems and spectral representations in the field theory
JO  - Doklady Akademii Nauk
PY  - 1969
SP  - 781
EP  - 783
VL  - 187
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1969_187_4_a20/
LA  - ru
ID  - DAN_1969_187_4_a20
ER  -