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@article{MASLO_1973__23_2_a6, author = {Farley, Reuben W.}, title = {An {Iseomorphism} {Theorem} for {Positive} {Commutative} {Semigroups} on the {Plane}}, journal = {Mathematica slovaca}, pages = {136--146}, publisher = {mathdoc}, volume = {23}, number = {2}, year = {1973}, mrnumber = {0335673}, zbl = {0255.22005}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1973__23_2_a6/} }
Farley, Reuben W. An Iseomorphism Theorem for Positive Commutative Semigroups on the Plane. Mathematica slovaca, Tome 23 (1973) no. 2, pp. 136-146. http://geodesic.mathdoc.fr/item/MASLO_1973__23_2_a6/