@article{NUMA_1964__6_131616,
     author = {H.S. WILF},
     title = {Exactness {Conditions} in {Numerical} {Quadrature.}},
     journal = {Numerische Mathematik},
     pages = {315--319},
     year = {1964},
     volume = {6},
     zbl = {0123.12203},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1964__6_131616/}
}