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@article{MZ_1982__181_173220, author = {Judy Roitman}, title = {Non-isomorphic {Hyper-real} {Fields} from {Non-isomorphic} {Ultrapowers.}}, journal = {Mathematische Zeitschrift}, pages = {93--96}, publisher = {mathdoc}, volume = {181}, year = {1982}, zbl = {0474.54003}, url = {http://geodesic.mathdoc.fr/item/MZ_1982__181_173220/} }
Judy Roitman. Non-isomorphic Hyper-real Fields from Non-isomorphic Ultrapowers.. Mathematische Zeitschrift, Tome 181 (1982), pp. 93-96. http://geodesic.mathdoc.fr/item/MZ_1982__181_173220/