[1] Univ Politecn Cataluna, Dept Engn Graph, Super Sch Ind & Aeronaut Engn, Barcelona, Spain
[2] Univ Jaen, Dept Engn Graph Design & Projects, Jaen, Spain
[3] Univ Politecn Cataluna, Dept Engn Graph, Sch Ind & Aeronaut Engn Terrassa, Barcelona, Spain
[4] Univ Politecn Cataluna, Dept Engn Presentat EGE, Tech Coll Manresa, Barcelona, Spain