?url_ver=Z39.88-2004&rft_id=10.1002%2Facs.4480080108&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Kurzhanski%2C+A.&rft.aulast=Kurzhanski&rft.aufirst=A.&rft.issue=1&rft.volume=8&rft.date=January+1994&rft.issn=08906327&rft.atitle=Guranteed+state+estimation+for+dynamical+systems%3A+Ellipsoidal+techniques&rft.title=International+Journal+of+Adaptive+Control+and+Signal+Processing&rft.pages=85-101&rft.genre=article