TY  - JOUR
AU  - A. A. Kyrychenko
AU  - Yu. S. Samoilenko
TI  - On the spectrum and spectrum multiplicities of a~sum of orthogonal projections
JO  - Algebra and discrete mathematics
PY  - 2004
SP  - 71
EP  - 76
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ADM_2004_3_a5/
LA  - en
ID  - ADM_2004_3_a5
ER  -