TY  - JOUR
AU  - Joachim Schmid
TI  - Sums of Fourth Powers of Real Algebraic Functions.
JO  - Manuscripta mathematica
PY  - 1994
SP  - 361
EP  - 364
VL  - 83
IS  - 3-4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MM2_1994__83_3-4_155967/
ID  - MM2_1994__83_3-4_155967
ER  -