%0 Journal Article %A Kinga Cudna-Salmanowicz %A Jan Jakóbowski %T Extending Nearaffine Planes to Hyperbola Structures %J Bulletin of the Polish Academy of Sciences. Mathematics %D 2007 %P 71-80 %V 55 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ba55-1-8/ %R 10.4064/ba55-1-8 %G en %F 10_4064_ba55_1_8