[2] S.S. DRAGOMIR and N.S. BARNETT , An Ostrowski type inequality for mappings whose second derivatives are bounded and applications , RGMIA Res. Rep. Coll., 1(2) (1998) , 69-77.
[8] B.G. PACHPATTE , On Ostrowski- Grüss-Čebyšev type inequalities for functions whose modulus of derivatives are convex , J. Inequal. Pure and Appl. Math. , 6(4) (2005) , Art. 128. [ONLINE : http://jipam.vu.edu.au/article.php?sid=602].
OWA, S., & OBRADOVIĆ, M. (1986). CERTAIN SUBCLASSES OF BAZILEVIČ FUNCTIONS OF TYPE α. International Journal of Mathematics and Mathematical Sciences, 1986(), 347-359. https://doi.org/10.1155/S0161171286000431