Rugeihyamu, Sylvester E.2016-09-212016-09-212003-12-01Rugeihyamu, S.E., 2003. On the bieberbach and Koebe constants for sector domains and sector disks. Israel Journal of Mathematics, 136(1), pp.117-123.http://hdl.handle.net/20.500.11810/4241Full text can be accessed at http://link.springer.com/article/10.1007/BF02807193We discuss domain constants related to the classical Bieberbach and Koebe theorems. We find a class of simply connected domains for which the product of these constants behave like extremal domain and gives a better result on Osgood’s inequalities.enJournal Article, Peer Reviewed10.1007/BF02807193