%0 Journal Article %A Witold Jarnicki %T Kobayashi-Royden vs. Hahn pseudometric in ℂ² %J Annales Polonici Mathematici %D 2000 %P 289-294 %V 75 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-75-3-289-294/ %R 10.4064/ap-75-3-289-294 %G de %F 10_4064_ap_75_3_289_294