1. An application of Hayashi's inequality for differentiable functions;Agarwal;Computers Math. Applic,1996
2. Some consideratons on Iyengar's inequality and some related applicatons;Milovanović;Univ. Beograd Publ. Elektrotehn. Fak. Ser. Mat. Fiz.,1976
3. Note on the Steffensen inequality;Vasić;Univ. Beograd Publ. Elektrotehn. Fak. Ser. Mat. Fiz.,1981