Ash, C. J <br/><br/>
Computable structures and the hyperarithmetical hierarchy 
C.J. Ash, J. Knight 
 - 1st ed 
 - Amsterdam  Elsevier  2000 
 - xv, 346 p. ; 24 cm., : alk. paper 
<br/><br/> Includes bibliographical references (p. 323-333) and index 
<br/><br/><label>ISBN: </label>9780444500724 
<br/><br/><label>ISSN: </label>34103 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computable functions
<br/><br/><label>Dewey Class. No.: </label>511.3 ASH