TY  - BOOK
AU  - Dyadyusha, G. G.
AU  - Kryachko, E. S. 
ED  - Academy of Sciences of Ukrainian SSR
TI  - Algebraic structure of density matrices for excited states / 
T2  - Preprint ; 
PY  - 1979///
CY  - Kiev, 
KW  - ფიზიკა
N1  - Bibliography: p. 10
ER  -