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@article{SF_1970__1_133792, author = {J.D. Lawson and W. Williams}, title = {Topological semi-lattices and their underlying spaces.}, journal = {Semigroup forum}, pages = {209--223}, publisher = {mathdoc}, volume = {1}, year = {1970}, zbl = {0211.02901}, url = {http://geodesic.mathdoc.fr/item/SF_1970__1_133792/} }
J.D. Lawson; W. Williams. Topological semi-lattices and their underlying spaces.. Semigroup forum, Tome 1 (1970), pp. 209-223. http://geodesic.mathdoc.fr/item/SF_1970__1_133792/