TY  - JOUR
AU  - Israel Bertsein
TI  - Essential and inessential complexes.
JO  - Commentarii mathematici Helvetici
PY  - 1959
SP  - 70
EP  - 80
VL  - 33
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMH_1959__33_139164/
ID  - CMH_1959__33_139164
ER  -