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MR 0049879 |
Zbl 0047.11402
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MR 0098325 |
Zbl 0084.33502
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MR 0056822
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Normed fields over the real and complex fields. Mich. Math. J. 1 (1952), 61-68.
MR 0049178 |
Zbl 0048.26901