%0 Journal Article
%A A. Szybiak
%T Intrinsic construction of the metric in the model of Poincaré of hyperbolic planimetry
%J Commentationes Mathematicae
%D 1974
%P  481-487
%V 17
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.14708/cm.v17i2.5794/
%R 10.14708/cm.v17i2.5794
%G pl
%F 10_14708_cm_v17i2_5794