@article{GDZPPN002053896,
title = {\"Uber monothetische Gruppen.},
journal = {Commentarii mathematici Helvetici},
volume = {16},
year = {1943},
pages = {249-263},
zbl = {0061.04402},
url = {http://dml.mathdoc.fr/item/GDZPPN002053896}
}
Eckmann, Beno. Über monothetische Gruppen.. Commentarii mathematici Helvetici, Tome 16 (1943) pp. 249-263. http://gdmltest.u-ga.fr/item/GDZPPN002053896/