%0 Journal Article %A O. Martio %A J. Sarvas %T Injectivity theorems in plane and space %J Annales Fennici Mathematici %D 1979 %P 383-401 %V 4 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1978-79.0413/ %R 10.5186/aasfm.1978-79.0413 %G en %F AFM_1979_4_2_a15