@article{GDZPPN001248138,
title = {The equivalence of uniquely divisible semigroups and uniquely representable semigroups on the two-cell.},
journal = {Semigroup forum},
volume = {4},
year = {1972},
pages = {69-72},
zbl = {0261.22002},
url = {http://dml.mathdoc.fr/item/GDZPPN001248138}
}
Devun, E.E. The equivalence of uniquely divisible semigroups and uniquely representable semigroups on the two-cell.. Semigroup forum, Tome 4 (1972) pp. 69-72. http://gdmltest.u-ga.fr/item/GDZPPN001248138/