%0 Journal Article
%A P. Koltsaki
%A D. Papadopoulou 
%T Orthogonal Line Congruences with Common Middle Surface
%J Journal for geometry and graphics
%D 2008
%P 123-132
%V 12
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/JGG_2008_12_2_JGG_2008_12_2_a0/
%F JGG_2008_12_2_JGG_2008_12_2_a0