On the sharp constant for starlikeness.
Chen, Keying
International Journal of Mathematics and Mathematical Sciences, Tome 25 (2001), p. 383-387 / Harvested from The Electronic Library of Mathematics
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Publié le : 2001-01-01
DOI : https://doi.org/10.1155/S0161171201004665
EUDML-ID : urn:eudml:doc:49031 
@article{01590781,
     title = {On the sharp constant for starlikeness.},
     journal = {International Journal of Mathematics and Mathematical Sciences},
     volume = {25},
     year = {2001},
     pages = {383-387},
     doi = {10.1155/S0161171201004665},
     zbl = {0978.30016},
     language = {en},
     url = {http://dml.mathdoc.fr/item/01590781}
}

Chen, Keying. On the sharp constant for starlikeness.. International Journal of Mathematics and Mathematical Sciences, Tome 25 (2001) pp. 383-387. doi : 10.1155/S0161171201004665. http://gdmltest.u-ga.fr/item/01590781/