%0 Journal Article %A R. Krasnodębski %T Intersecting pencil of hyperbolic circles %J Colloquium Mathematicum %D 1970 %P 265-272 %V 21 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-21-2-265-272/ %R 10.4064/cm-21-2-265-272 %G en %F 10_4064_cm_21_2_265_272