TY  - JOUR
AU  - Stanisław Gołąb
TI  - On the notion of gradient. I. Essentiality of regularity suppositions
JO  - Annales Polonici Mathematici
PY  - 1960
SP  - 1
EP  - 4
VL  - 8
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/ap-8-1-1-4/
DO  - 10.4064/ap-8-1-1-4
LA  - en
ID  - 10_4064_ap_8_1_1_4
ER  -