@article{JRAM_1986__370_152861,
     author = {Michael Pannenberg},
     title = {A discrete integral representation for polynomials of fixed maximal degree and their universal {Korovkin} closure.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {74--82},
     publisher = {mathdoc},
     volume = {370},
     year = {1986},
     zbl = {0586.32002},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1986__370_152861/}
}