?url_ver=Z39.88-2004&rft_id=10.1007%2F3-540-58338-6_100&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=De+Nicola%2C+Rocco&rft.aufirst=Rocco&rft.aulast=De+Nicola&rft.isbn=3-540-58338-6&rft.btitle=Mathematical+Foundations+of+Computer+Science+1994&rft.title=A+Completeness+Theorem+for+Nondeterministic+Kleene+Algebras&rft.date=1994&rft.genre=bookitem