%0 Journal Article
%A O. Bottema
%T A Theorem of Bobillier on the Tetrahedron.
%J Elemente der Mathematik
%D 1969
%P 6-10
%V 24
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ELMA_1969__24_140910/
%F ELMA_1969__24_140910