%0 Journal Article %A Maurice Heins %T Fundamental polygons of fuchsian and fuchsoid groups %J Annales Fennici Mathematici %D 1964 %V 336-344 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1964.337/ %R 10.5186/aasfm.1964.337 %G en %F AFM_1964_336-344_a7