no. 4
The radius of univalence and starlikeness of some classes of regular functions
Compositio Mathematica, Tome 23 (1971) no. 4, pp. 467-470. 
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     author = {Calys, Emanuel G.},
     title = {The radius of univalence and starlikeness of some classes of regular functions},
     journal = {Compositio Mathematica},
     pages = {467--470},
     publisher = {Wolters-Noordhoff Publishing},
     volume = {23},
     number = {4},
     year = {1971},
     mrnumber = {470189},
     zbl = {0225.30012},
     language = {en},
     url = {http://www.numdam.org/item/CM_1971__23_4_467_0/}
}
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Calys, Emanuel G. The radius of univalence and starlikeness of some classes of regular functions. Compositio Mathematica, Tome 23 (1971) no. 4, pp. 467-470. http://www.numdam.org/item/CM_1971__23_4_467_0/

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