no. 2
On a class of starlike functions
Compositio Mathematica, Tome 21 (1969) no. 2, pp. 122-124. 
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     author = {Wright, D. J.},
     title = {On a class of starlike functions},
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     pages = {122--124},
     publisher = {Wolters-Noordhoff Publishing},
     volume = {21},
     number = {2},
     year = {1969},
     mrnumber = {245780},
     zbl = {0194.38603},
     language = {en},
     url = {http://www.numdam.org/item/CM_1969__21_2_122_0/}
}
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Wright, D. J. On a class of starlike functions. Compositio Mathematica, Tome 21 (1969) no. 2, pp. 122-124. http://www.numdam.org/item/CM_1969__21_2_122_0/

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M.S. Robertson [2] On the theory of univalent functions, Annals of Mathematics 37 (1936), 374-408. | JFM | MR | Zbl

R. Singh [3] On a class of star-like functions, Compositio Mathematica, 19 (1968), 78-82. | Numdam | MR | Zbl