References
Hall, M.: The theory of groups. New York: The Macmillan Company 1959
Šafarevič, I.R.: Onp-extensions. Am. Math. Soc. Trans. Series II 4, 59–71 (1954)
Serre, J.-P.: Trees. Berlin Heidelberg New York: Springer 1980
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Valentini, R.C. The Deuring-Šafarevič formula revisited. Math Z 196, 59–63 (1987). https://doi.org/10.1007/BF01179267
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF01179267