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@article{SF_1992__44_1_135163, author = {S.D. Hippisley-Cox}, title = {Finite point compactifications of {(N,} +).}, journal = {Semigroup forum}, pages = {388--392}, publisher = {mathdoc}, volume = {44}, number = {1}, year = {1992}, zbl = {0759.22007}, url = {http://geodesic.mathdoc.fr/item/SF_1992__44_1_135163/} }
S.D. Hippisley-Cox. Finite point compactifications of (N, +).. Semigroup forum, Tome 44 (1992) no. 1, pp. 388-392. http://geodesic.mathdoc.fr/item/SF_1992__44_1_135163/