TY - JOUR AU - G. Nawratil TI - On the Degenerated Cases of Architecturally Singular Planar Parallel Manipulators JO - Journal for geometry and graphics PY - 2008 SP - 141 EP - 149 VL - 12 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/JGG_2008_12_2_JGG_2008_12_2_a2/ ID - JGG_2008_12_2_JGG_2008_12_2_a2 ER -