@article{GDZPPN001261789, title = {Finite point compactifications of (N, +).}, journal = {Semigroup forum}, volume = {44}, year = {1992}, pages = {388-392}, zbl = {0759.22007}, url = {http://dml.mathdoc.fr/item/GDZPPN001261789} }
Hippisley-Cox, S.D. Finite point compactifications of (N, +).. Semigroup forum, Tome 44 (1992) pp. 388-392. http://gdmltest.u-ga.fr/item/GDZPPN001261789/