?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Nguyen%2C+Viet+Ha&rft.aulast=Nguyen&rft.aufirst=Viet+Ha&rft.date=2010&rft.title=Towards+scalable+agent+based+web+service+systems&rft.genre=proceeding