TY  - JOUR
AU  - John W. Rutter
TI  - Maps and Equivalences into Equalizing Fibrations and from Coequalizing Cofibrations.
JO  - Mathematische Zeitschrift
PY  - 1971
SP  - 125
EP  - 141
VL  - 122
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1971__122_171589/
ID  - MZ_1971__122_171589
ER  -