%0 Journal Article %A Władysław Wilczyński %T On piecewise flat surfaces in the sense of Toralballa %J Annales Polonici Mathematici %D 1970 %P 253-259 %V 24 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-24-3-253-259/ %R 10.4064/ap-24-3-253-259 %G en %F 10_4064_ap_24_3_253_259