@article{FORUM_1990__2_3_141642,
     author = {Ant\'onio M. Caetano},
     title = {Weyl {Numbers} in {Function} {Spaces.}},
     journal = {Forum mathematicum},
     pages = {249--264},
     year = {1990},
     volume = {2},
     number = {3},
     zbl = {0708.46036},
     url = {http://geodesic.mathdoc.fr/item/FORUM_1990__2_3_141642/}
}