%0 Journal Article
%A K. Morita 
%T Theorems on Two Tetrahedrons Intersecting a Sphere
%J Journal for geometry and graphics
%D 2018
%P 219-227
%V 22
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/JGG_2018_22_2_JGG_2018_22_2_a5/
%F JGG_2018_22_2_JGG_2018_22_2_a5