TY  - JOUR
AU  - A. Szybiak
TI  - Intrinsic construction of the metric in the model of Poincaré of hyperbolic planimetry
JO  - Commentationes Mathematicae
PY  - 1974
SP  -  481
EP  - 487
VL  - 17
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.14708/cm.v17i2.5794/
DO  - 10.14708/cm.v17i2.5794
LA  - pl
ID  - 10_14708_cm_v17i2_5794
ER  -