A hierarchy of Turing degrees :

By Downey, R. G.. . 1 online resource : , Series: Annals of Mathematics Studies, 385--online resource web page. Annals of Mathematics Studies Number 206--PDF title page 9780691200217 | 0691200211

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Computability and Complexity

By Downey, Rod.. . XXVIII, 346 p. 17 illus. 9783031537448

Place Hold on Computability and Complexity

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A hierarchy of Turing degrees :

Computability and Complexity