@article{bwmeta1.element.desklight-b8f707e9-1c95-43ef-a127-da195657f77d,
author = {Michael Friedberg},
title = {Metrizable approximations of semigroups},
journal = {Colloquium Mathematicae},
volume = {25},
year = {1972},
pages = {63-69},
zbl = {0234.22004},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.desklight-b8f707e9-1c95-43ef-a127-da195657f77d}
}
Michael Friedberg. Metrizable approximations of semigroups. Colloquium Mathematicae, Tome 25 (1972) pp. 63-69. http://gdmltest.u-ga.fr/item/bwmeta1.element.desklight-b8f707e9-1c95-43ef-a127-da195657f77d/