@article{GDZPPN001254847,
title = {No semi topological monoid can be defined on the closure of the set { (x,sin 1 x) : xeR {o...},
journal = {Semigroup forum},
volume = {23},
year = {1981},
pages = {283-284},
zbl = {0462.22001},
url = {http://dml.mathdoc.fr/item/GDZPPN001254847}
}
Ruppert, W. No semi topological monoid can be defined on the closure of the set { (x,sin 1 x) : xeR {o.... Semigroup forum, Tome 23 (1981) pp. 283-284. http://gdmltest.u-ga.fr/item/GDZPPN001254847/