1. Pescar V: On the univalence of some integral operators. J Indian Acad Math 2005, 27: 239–243.
2. Breaz D, Breaz N: Univalence of an integral operator. Mathematica (Cluj) 2005,47(70):35–38.
3. Pescar V: A new generalization of Ahlfors's and Becker's criterion of univalence. Bull Malaysian Math Soc 1996, 19: 53–54.
4. Ozaki S, Nunokawa M: The Schwarzian derivative and univalent func-tions. Proc Am Math Soc 1972, 33: 392–394. 10.1090/S0002-9939-1972-0299773-3
5. Breaz D: Integral Operators on Spaces of Univalent Functions. Publishing House of the Romanian Academy of Sciences, Bucharest (in Romanian); 2004.