@article{etna_vol41_pp1-12, author = {Aleksandar S. Cvetkovi\'c and Miodrag M. Spalevi\'c}, title = {Estimating the error of Gauss-Tur\'an quadrature formulas using their extensions}, journal = {Electron. Trans. Numer. Anal.}, volume = {41}, year = {2014}, pages = {1--12}, }