@article{RCM_2003_37_2_a4,
     author = {Nenad Ujevi\'c},
     title = {Error inequalities for a quadrature formula of open type},
     journal = {Revista colombiana de matematicas},
     pages = {93--105},
     publisher = {mathdoc},
     volume = {37},
     number = {2},
     year = {2003},
     url = {http://geodesic.mathdoc.fr/item/RCM_2003_37_2_a4/}
}