@article{GDZPPN001253816,
title = {The structure of semitopological monoids defined on compact connected 3-manifolds.},
journal = {Semigroup forum},
volume = {20},
year = {1980},
pages = {219-246},
zbl = {0435.22003},
url = {http://dml.mathdoc.fr/item/GDZPPN001253816}
}
Ruppert, W. The structure of semitopological monoids defined on compact connected 3-manifolds.. Semigroup forum, Tome 20 (1980) pp. 219-246. http://gdmltest.u-ga.fr/item/GDZPPN001253816/