@article{KJM_2008_31_a3,
     author = {Arif Rafiq and Farooq Ahmad},
     title = {Another weighted {Ostrowski-gr\"uss} type inequality for twice differentiable mappings},
     journal = {Kragujevac Journal of Mathematics},
     pages = {43 },
     publisher = {mathdoc},
     volume = {31},
     year = {2008},
     zbl = {1199.26059},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KJM_2008_31_a3/}
}