TY  - JOUR
AU  - Chan Fyong Zung
TI  - Homotopy groups of the $3$-groupoid of regular Ann-categories
JO  - Vestnik Moskovskogo universiteta. Matematika, mehanika
PY  - 1994
SP  - 3
EP  - 6
IS  - 5
UR  - http://geodesic.mathdoc.fr/item/VMUMM_1994_5_a0/
LA  - ru
ID  - VMUMM_1994_5_a0
ER  -