TY  - JOUR
AU  - Zurab Janelidze
TI  - Closedness properties of internal relations I:  A unified approach to
Mal'tsev, unital and subtractive categories
JO  - Theory and applications of categories
PY  - 2006
SP  - 236
EP  - 261
VL  - 16
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TAC_2006_16_a11/
LA  - en
ID  - TAC_2006_16_a11
ER  -