%0 Journal Article %A O. Martio %A S. Rickman %T Measure properties of the branch set and its image of quasiregular mappings %J Annales Fennici Mathematici %D 1973 %V 521-560 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1973.541/ %R 10.5186/aasfm.1973.541 %G en %F AFM_1973_521-560_a19