%0 Journal Article
%A V. Mileikovskyi 
%T A Task About Spheres and Cones, Applicable in Jet Theory
%J Journal for geometry and graphics
%D 2019
%P 99-114
%V 23
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/JGG_2019_23_1_JGG_2019_23_1_a8/
%F JGG_2019_23_1_JGG_2019_23_1_a8