@article{NUMA_1986__50_133150,
     author = {Erich Novak},
     title = {The {Average} {A} {Posteriori} {Error} of {Numerical} {Methods.}},
     journal = {Numerische Mathematik},
     pages = {245--252},
     publisher = {mathdoc},
     volume = {50},
     year = {1986},
     zbl = {0586.65017},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1986__50_133150/}
}