TY  - JOUR
AU  - T.Y. Lam
AU  - A. Prestel
AU  - M.D. Choi
TI  - Sums of 2m-th powers of rational functions in one variable over real closed fields.
JO  - Mathematische Zeitschrift
PY  - 1996
SP  - 93
EP  - 112
VL  - 221
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1996__221_1_174837/
ID  - MZ_1996__221_1_174837
ER  -