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@article{PORMA_1951__10_2_114513, author = {Michiura, Tadashi}, title = {On simply ordered groups}, journal = {Portugaliae mathematica}, pages = {89--95}, publisher = {mathdoc}, volume = {10}, number = {2}, year = {1951}, mrnumber = {0043797}, zbl = {0043.02101}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1951__10_2_114513/} }
Michiura, Tadashi. On simply ordered groups. Portugaliae mathematica, Tome 10 (1951) no. 2, pp. 89-95. http://geodesic.mathdoc.fr/item/PORMA_1951__10_2_114513/