On a problem concerning the Shafarevich map

Let $L/K$ be a Galois extension of fields which are extensions of finite degree over the field $Q_p$, and let $L_\mathrm{ab}$ be the maximal Abelian extension of $L$. This article constructs the Shafarevich map from the Galois group of the extension $L_\mathrm{ab}/K$ to a certain concrete skew field arising in the theory of formal groups.
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