@article{MAN_1973__200_162352,
     author = {Jens Peter Reus Christensen},
     title = {Necessary and {Sufficient} {Conditions} for the {Measurability} of {Certain} {Sets} of {Closed} {Subsets.}},
     journal = {Mathematische Annalen},
     pages = {189--194},
     publisher = {mathdoc},
     volume = {200},
     year = {1973},
     zbl = {0233.28002},
     url = {http://geodesic.mathdoc.fr/item/MAN_1973__200_162352/}
}