TY  - JOUR
AU  - Ana Helena Roque
TI  - Notes on effective descent and projectivity in quasivarieties of universal 
algebras
JO  - Theory and applications of categories
PY  - 2008
SP  - 172
EP  - 181
VL  - 21
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TAC_2008_21_a8/
LA  - en
ID  - TAC_2008_21_a8
ER  -