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@article{MS2_1961__9_165764, author = {Edward S. O'Keefe}, title = {Verification of a {Conjecture} of {Th.} {Skolem.}}, journal = {Mathematica Scandinavica}, pages = {80--82}, publisher = {mathdoc}, volume = {9}, year = {1961}, zbl = {0105.25003}, url = {http://geodesic.mathdoc.fr/item/MS2_1961__9_165764/} }
Edward S. O'Keefe. Verification of a Conjecture of Th. Skolem.. Mathematica Scandinavica, Tome 9 (1961), pp. 80-82. http://geodesic.mathdoc.fr/item/MS2_1961__9_165764/