%0 Journal Article
%A L. 

 Dovniković
%T The 

 realization of the continuity principle in the relativistic pencils of 

 circles and spheres
%J Novi Sad Journal of Mathematics
%D 1999
%P 97-107
%V 29
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/NSJOM_1999_29_3a_9/
%F NSJOM_1999_29_3a_9