?url_ver=Z39.88-2004&rft_id=10.3934%2Fnaco.2017006&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Z.B.&rft.aulast=Ibrahim&rft.au=Ibrahim%2C+Z.B.&rft.volume=7&rft.issn=21553289&rft.issue=1&rft.atitle=Adaptive+order+of+block+backward+differentiation+formulas+for+stiff+ODEs&rft.pages=95-106&rft.title=Numerical+Algebra%2C+Control+and+Optimization&rft.date=2017&rft.genre=article