TY  - BOOK
AU  - Roberts,A.Wayne
AU  - Varberg,Dale E.
TI  - Convex functions 
SN  - 0125897405
U1  - 517.52 ROB V  
PY  - 1973///.
CY  - New York : 
PB  - Academic Press, 
KW  - Convex functions
N1  - Includes index.
ER  -