%0 Journal Article %A A.J. Alonso Gomez %A A. Fernandez Arias %T The space of extensions of a Klein surface of finite genus %J Annales Fennici Mathematici %D 1990 %P 247-259 %V 15 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1990.1501/ %R 10.5186/aasfm.1990.1501 %G en %F AFM_1990_15_2_a2