TY  - JOUR
AU  - J.M. Cushing
TI  - Extremal Tests for Scalar Functions of Several Real variables at Degenerate Critical Points. (Short Communication).
JO  - Aequationes mathematicae
PY  - 1975
SP  - 109
EP  - 110
VL  - 12
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AM2_1975__12_136488/
ID  - AM2_1975__12_136488
ER  -