Geodesic
Inequalities for the Schwarzian derivative for subclasses of convex functions in the unit disc
Vladikavkazskij matematičeskij žurnal, Tome 8 (2006) no. 2, pp. 50-53

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Nehari norm of the Schwarzian derivative of an analytic function is closely related to its univalence. The famous Nehari-Kraus theorem ([3], [4]) and Ahlfors-Weill theorem [1] are of fundamental importance in this direction. For a non-constant meromorphic function $f$ on $D$ the unite disc, the Schwarzian derivative $S_f$ of $f$ by is holomorphic at $z_0\in D$ if and only if $f$ is locally univalent at $z_0$. The aim of this paper is to give sharp estimates of the Nehari norm for the subclasses of convex functions in the unit disc. 
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     title = {Inequalities for the {Schwarzian} derivative for subclasses of convex functions in the unit disc},
     journal = {Vladikavkazskij matemati\v{c}eskij \v{z}urnal},
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Y. Polatoglu; M. Caglar; A. Sen. Inequalities for the Schwarzian derivative for subclasses of convex functions in the unit disc. Vladikavkazskij matematičeskij žurnal, Tome 8 (2006) no. 2, pp. 50-53. http://geodesic.mathdoc.fr/item/VMJ_2006_8_2_a6/