TY  - JOUR
AU  - Kehrein, Achim
TI  - Projective objects in the category of chain complexes
JO  - Communications in Mathematics
PY  - 1999
SP  - 33
EP  - 38
VL  - 07
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/COMIM_1999__7_1_a2/
LA  - en
ID  - COMIM_1999__7_1_a2
ER  -