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@article{SF_1986__35_134876, author = {D.R. Brown and Rs.S. Houston}, title = {Cancellative semigroups on manifolds.}, journal = {Semigroup forum}, pages = {279--302}, publisher = {mathdoc}, volume = {35}, year = {1986}, zbl = {0626.22001}, url = {http://geodesic.mathdoc.fr/item/SF_1986__35_134876/} }
D.R. Brown; Rs.S. Houston. Cancellative semigroups on manifolds.. Semigroup forum, Tome 35 (1986), pp. 279-302. http://geodesic.mathdoc.fr/item/SF_1986__35_134876/