TY  - JOUR
AU  - Tiller, John
TI  - Unions in $E-M$ categories and coreflective subcategories
JO  - Commentationes Mathematicae Universitatis Carolinae
PY  - 1974
SP  - 173
EP  - 187
VL  - 15
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMUC_1974__15_1_a14/
LA  - en
ID  - CMUC_1974__15_1_a14
ER  -