1. Brannan, D.A., Clunie, J.G. (Eds.) Aspects of Contemporary Complex Analysis. In: Proceedings of the NATO Advanced Study Institute held at the University of Durham, Durham; July 1–20,1979, Academic Press, New York and London, 1980
2. Brannan, D.A., Taha, T.S.: On some classes of bi-univalent functions. Studia Univ. Babeş-Bolyai Math. 31(2), 70–77 (1986)
3. Duren, P.L.: Univalent Functions, Grundlehren der MathematischenWissenschaften, vol. 259. Springer-Verlag, Berlin (1983)
4. Frasin, B.A.: Coefficcient bounds for certain classes of bi-univalent functions. Hacet. J. Math. Stat. 43(3), 383–389 (2014)
5. Frasin, B.A., Aouf, M.K.: New subclasses of bi-univalent functions. Appl. Math. Lett. 24, 1569–1573 (2011)