TY  - JOUR
AU  - P. D. Andreev
TI  - The proof of Busemann conjecture for $G$-spaces with non-positive curvature
JO  - Algebra i analiz
PY  - 2014
SP  - 1
EP  - 20
VL  - 26
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AA_2014_26_2_a0/
LA  - ru
ID  - AA_2014_26_2_a0
ER  -