TY  - JOUR
AU  - Yuri Savchuk
TI  - $C^*$-algebra generated by four projections with sum equal to~2
JO  - Algebra and discrete mathematics
PY  - 2004
SP  - 126
EP  - 134
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ADM_2004_3_a9/
LA  - en
ID  - ADM_2004_3_a9
ER  -