@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},
     year = {1973},
     volume = {23},
     number = {2},
     mrnumber = {0335673},
     zbl = {0255.22005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1973_23_2_a6/}
}