@article{MOMA_1992__113_4_178567,
     author = {M. Pannenberg},
     title = {Approximate {Regularity} of {Commutative} {Beurling} {Algebras} and {Korovkin} {Approximation.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {275--310},
     publisher = {mathdoc},
     volume = {113},
     number = {4},
     year = {1992},
     zbl = {0765.46038},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1992__113_4_178567/}
}