Geodesic
Elementary abelian conductor
Zapiski Nauchnykh Seminarov POMI, Problems in the theory of representations of algebras and groups. Part 26, Tome 423 (2014), pp. 126-131 
I. B. Zhukov. Elementary abelian conductor. Zapiski Nauchnykh Seminarov POMI, Problems in the theory of representations of algebras and groups. Part 26, Tome 423 (2014), pp. 126-131. http://geodesic.mathdoc.fr/item/ZNSL_2014_423_a6/
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     author = {I. B. Zhukov},
     title = {Elementary abelian conductor},
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     year = {2014},
     volume = {423},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2014_423_a6/}
}
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Voir la notice du chapitre de livre provenant de la source Math-Net.Ru

The paper is devoted to ramification theory for a class of complete discrete valuation fields that includes $2$-dimensional local fields of prime characteristic $p$. It is proved that any finite extension of such a field can be modified into an extension with zero ramification depth by means of an infinite elementary abelian base change.

[1] I. B. Zhukov, “Vetvlenie elementarno abelevykh rasshirenii”, Zap. nauchn. semin. POMI, 413, 2013, 106–114 | MR

[2] L. Xiao, I. Zhukov, Ramification in the imperfect residue field case, approaches and questions, Preprint, , 2013 http://math.usask.ca/fvk/Xiao-Zhukov.pdf

[3] E. F. Lysenko, “Vetvlenie tsiklicheskogo rasshireniya stepeni $p^2$ polnogo diskretno normirovannogo polya prostoi kharakteristiki $p$ s nesovershennym polem vychetov”, Zap. nauchn. semin. POMI, 413, 2013, 153–172 | MR