@article{1102991984,
author = {Hildebrant, John A.},
title = {On uniquely divisible semigroups on the two-cell.},
journal = {Pacific J. Math.},
volume = {23},
number = {3},
year = {1967},
pages = { 91-95},
language = {en},
url = {http://dml.mathdoc.fr/item/1102991984}
}
Hildebrant, John A. On uniquely divisible semigroups on the two-cell.. Pacific J. Math., Tome 23 (1967) no. 3, pp. 91-95. http://gdmltest.u-ga.fr/item/1102991984/