?url_ver=Z39.88-2004&rft_id=10.1109%2FACCESS.2019.2961700&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=N.A.A.&rft.au=Hussain%2C+N.A.A.&rft.aulast=Hussain&rft.atitle=Underactuated+Coupled+Nonlinear+Adaptive+Control+Synthesis+Using+U-Model+for+Multivariable+Unmanned+Marine+Robotics&rft.title=IEEE+Access&rft.date=2020&rft.pages=1851-1865&rft.issn=21693536&rft.volume=8&rft.genre=article