%0 Journal Article
%A B. Odehnal 
%T Isoptic Ruled Surfaces of Developable Surfaces
%J Journal for geometry and graphics
%D 2021
%P 1-17
%V 25
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/JGG_2021_25_1_JGG_2021_25_1_a0/
%F JGG_2021_25_1_JGG_2021_25_1_a0