%0 Journal Article %A Giorgi Khimshiashvili %A Dirk Siersma %T Cross-ratios of quadrilateral linkages %J Journal of Singularities %D 2015 %P 159-168 %V 13 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.5427/jsing.2015.13h/ %R 10.5427/jsing.2015.13h %F 10_5427_jsing_2015_13h