J. Pecaric et S. Varosanec, Harmonic polynomials and generalization of Ostrowski inequality with applications in numerical integration, NONLIN ANAL, 47(4), 2001, pp. 2365-2374
We provide a generalization of results given by Pearce and Pecaric in [7] r
elated to the Ostrowski integral inequality. Applying our results in the Ne
wton-Cotes integration formulae we obtain new error estimates of those form
ulae.