Geodesic
Coefficient problem for some class of functions nonvanishing in the unit disk
Problemy analiza, no. 5 (1998), pp. 105-110 Cet article a éte moissonné depuis la source Math-Net.Ru

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In this paper we determine the bounds of the functional $b_2-\alpha b_1, \alpha$-real, for holomorphic univalent and bounded functions, symmetric with respect to the real axis, nonvanishing in the unit disk. The result generalized the estimates of $b_1$ and $b_2$ for these functions, obtained by Sladkowska [4]. 
@article{PA_1998_5_a2,
     author = {W. Majchrzak and A. Szwankowski},
     title = {Coefficient problem for some class of functions nonvanishing in the unit disk},
     journal = {Problemy analiza},
     pages = {105--110},
     year = {1998},
     number = {5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PA_1998_5_a2/}
}
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%A A. Szwankowski
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W. Majchrzak; A. Szwankowski. Coefficient problem for some class of functions nonvanishing in the unit disk. Problemy analiza, no. 5 (1998), pp. 105-110. http://geodesic.mathdoc.fr/item/PA_1998_5_a2/