TY  - JOUR
AU  - Hans.-E. Porst
TI  - On Underlying Functors in General and Topological Algebra.
JO  - Manuscripta mathematica
PY  - 1977
SP  - 209
EP  - 226
VL  - 20
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MM2_1977__20_154438/
ID  - MM2_1977__20_154438
ER  -