TY  - BOOK
AU  - Shen,A & Vereshchagin,N.K
ED  - Vereshchagin, N.K
TI  - Computable functions
T2  - Student mathematical library 19
SN  - 9780821827321
U1  - 1.02+18+28 
PY  - 2003///
CY  - Providence
PB  - American Mathematical Society
ER  -