TY  - BOOK
AU  - Prestel, A.
AU  - Delzell, C.N.
TI  - Positive Polynomials: From Hilbert's 17th problem to real algebra
SN  - 3-540-41215-8
U1  - 516.35 
PY  - 2001///
CY  - Berlin
PB  - Springer Verlag
ER  -