Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) E. Nakano and Majid Nili Ahmadabadi,A cooperation strategy for a group of object lifting robots,Proceedings of IEEE/RSJ International Conference on Intelligent Robots and Systems. IROS '96,,IEEE,2002-12-24,1,,125-131,https://cir.nii.ac.jp/crid/1873398392300351104,https://doi.org/10.1109/iros.1996.570641