Journal of Symbolic Logic 54 (3):858-864 (1989)

Abstract
Let $M$ be a saturated model of a superstable theory and let $G = \operatorname{Aut}(M)$. We study subgroups $H$ of $G$ which contain $G_{(A)}, A$ the algebraic closure of a finite set, generalizing results of Lascar [L] as well as giving an alternative characterization of the simple superstable theories of [P]. We also make some observations about good, locally modular regular types $p$ in the context of $p$-simple types
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DOI 10.2307/2274747
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References found in this work BETA

Superstable Groups.Ch Berline & D. Lascar - 1986 - Annals of Pure and Applied Logic 30 (1):1-43.
Classification Theory and the Number of Nonisomorphic Models.S. Shelah - 1982 - Journal of Symbolic Logic 47 (3):694-696.

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Automorphism Groups of Differentially Closed Fields.Reinhold Konnerth - 2002 - Annals of Pure and Applied Logic 118 (1-2):1-60.

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