TY  - JOUR
AU  - Giuseppina Russo
AU  - Santi Valenti
TI  - On the k-pseudo-symmetrical approximate differentiability
JO  - Fundamenta Mathematicae
PY  - 1981
SP  - 79
EP  - 83
VL  - 114
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/fm-114-1-79-83/
DO  - 10.4064/fm-114-1-79-83
LA  - en
ID  - 10_4064_fm_114_1_79_83
ER  -