@article{NUMA_1974__23_132292,
     author = {H. Werner and H.L. Loeb and R.B. Barrar},
     title = {On the {Existence} of {Optimal} {Integration} {Formulas} for {Analytic} {Functions.}},
     journal = {Numerische Mathematik},
     pages = {105--118},
     publisher = {mathdoc},
     volume = {23},
     year = {1974},
     zbl = {0279.65019},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1974__23_132292/}
}