%0 Journal Article
%A J.E. Jayne
%A R.W. Hansell
%A I. Labuda
%T Boundaries of and Selectors for Upper Semi-Continuous Multi-Valued Maps.
%J Mathematische Zeitschrift
%D 1985
%P 297-318
%V 189
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1985__189_173583/
%F MZ_1985__189_173583