References
Brown, W. G.: On the existence of square roots in certain rings of power series. Math. Ann.158, 82–89 (1965).
van der Waerden, B. L.: Modern Algebra. New York: Frederick Ungar 1949.
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This paper was prepared while the author was a Fellow of the 1965 Summer Research Institute of the Canadian Mathematical Congress.
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Brown, W.G. Onk th roots in power series rings. Math. Ann. 170, 327–333 (1967). https://doi.org/10.1007/BF01350608
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DOI: https://doi.org/10.1007/BF01350608