@article{GDZPPN002220059,
title = {On Underlying Functors in General and Topological Algebra.},
journal = {Manuscripta mathematica},
volume = {22},
year = {1977},
pages = {209-226},
zbl = {0356.18007},
url = {http://dml.mathdoc.fr/item/GDZPPN002220059}
}
Porst, Hans.-E. On Underlying Functors in General and Topological Algebra.. Manuscripta mathematica, Tome 22 (1977) pp. 209-226. http://gdmltest.u-ga.fr/item/GDZPPN002220059/