TY  - JOUR
AU  - Piacenza, Robert J.
TI  - Homotopy Theory of Diagrams and CW-Complexes Over a Category
JO  - Canadian journal of mathematics
PY  - 1991
SP  - 814
EP  - 824
VL  - 43
IS  - 4
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1991-046-3/
DO  - 10.4153/CJM-1991-046-3
ID  - 10_4153_CJM_1991_046_3
ER  -