?url_ver=Z39.88-2004&rft_id=10.1109%2FTAC.1975.1101012&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Casti%2C+J.&rft.aulast=Casti&rft.aufirst=J.&rft.issue=4&rft.volume=20&rft.date=August+1975&rft.issn=0018-9286&rft.atitle=New+equations+for+the+time-dependent+regulator+problem&rft.title=IEEE+Transactions+on+Automatic+Control&rft.pages=558-558&rft.genre=article