TY  - JOUR
AU  - N. Hadzhiivanov
TI  - Extension of mappings into spheres and P. S. Aleksandrov's problem of bicompact compressions
JO  - Doklady Akademii Nauk
PY  - 1970
SP  - 525
EP  - 527
VL  - 194
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1970_194_3_a12/
LA  - ru
ID  - DAN_1970_194_3_a12
ER  -