%0 Journal Article
%A G. Nawratil 
%T Necessary Conditions for Type II DM Self-motions of Planar Stewart Gough Platforms
%J Journal for geometry and graphics
%D 2012
%P 139-151
%V 16
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/JGG_2012_16_2_JGG_2012_16_2_a2/
%F JGG_2012_16_2_JGG_2012_16_2_a2