?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=Jose+Antonio&rft.aulast=Baca+Garcia&rft.au=Baca+Garcia%2C+Jose+Antonio&rft.isbn=9783540876564&rft.date=September+2008&rft.title=Modelling+of+Modular+Robot+Configurations+Using+Graph+Theory&rft.btitle=Hybrid+Artificial+Intelligence+Systems&rft.genre=proceeding