%0 Journal Article %A Julian Gevirtz %T On f''/f' and injectivity %J Annales Fennici Mathematici %D 1983 %P 87-92 %V 8 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1983.0811/ %R 10.5186/aasfm.1983.0811 %G en %F AFM_1983_8_1_a4