@article{MZ_1967__101_170839,
     author = {A.M. Bruckner and M. Rosenfeld},
     title = {The {Uniform} {Closure} of {Certain} {Classes} of {Open} {Functions.}},
     journal = {Mathematische Zeitschrift},
     pages = {245--254},
     year = {1967},
     volume = {101},
     zbl = {0156.28103},
     url = {http://geodesic.mathdoc.fr/item/MZ_1967__101_170839/}
}