@article{700869,
title = {Syntopogene halbgruppen},
booktitle = {General Topology and its Relations to Modern Analysis and Algebra},
series = {GDML\_Books},
publisher = {Academia Publishing House of the Czechoslovak Academy of Sciences},
address = {Praha},
year = {1967},
pages = {101-102},
mrnumber = {MR0231936},
zbl = {0199.34002},
url = {http://dml.mathdoc.fr/item/700869}
}
Császár, Á. Syntopogene halbgruppen, dans General Topology and its Relations to Modern Analysis and Algebra, GDML_Books, (1967), pp. 101-102. http://gdmltest.u-ga.fr/item/700869/