TY  - JOUR
AU  - Stanisław Gołąb
AU  - M. Kucharzewski
TI  - On the notion of gradient. II. A certain extremal property of direction of the gradient vector
JO  - Annales Polonici Mathematici
PY  - 1960
SP  - 5
EP  - 12
VL  - 8
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/ap-8-1-5-12/
DO  - 10.4064/ap-8-1-5-12
LA  - en
ID  - 10_4064_ap_8_1_5_12
ER  -