@article{MAN_1964__155_161194,
     author = {J. Wermer},
     title = {Approximation on a {Disk.}},
     journal = {Mathematische Annalen},
     pages = {331--333},
     publisher = {mathdoc},
     volume = {155},
     year = {1964},
     zbl = {0122.06803},
     url = {http://geodesic.mathdoc.fr/item/MAN_1964__155_161194/}
}