@article{SF_1974__8_134025,
     author = {James A. Anderson},
     title = {The tensor product of a semigroup with a union of groups.},
     journal = {Semigroup forum},
     pages = {65--68},
     publisher = {mathdoc},
     volume = {8},
     year = {1974},
     zbl = {0275.20111},
     url = {http://geodesic.mathdoc.fr/item/SF_1974__8_134025/}
}