TY  - BOOK
AU  - Ash, C. J
AU  - Knight, J
TI  - Computable structures and the hyperarithmetical hierarchy
SN  - 9780444500724
SN  - 34103
U1  - 511.3 ASH 
PY  - 2000///
CY  - Amsterdam
PB  - Elsevier
KW  - Computable functions
N1  - Includes bibliographical references (p. 323-333) and index
ER  -