TY  - BOOK
AU  - Prestel,A & Delzell,C.N
ED  - Delzell, C N
TI  - Positive polynomials: from hilbert's 17th problem to real algebra
T2  - Springer monographs in mathematics
SN  - 9783540412151
PY  - 2001///
CY  - Berlin
PB  - Springer
ER  -