TY  - JOUR
AU  - G. E. Ivanov
TI  - Weak convexity in the senses of Vial and Efimov--Stechkin
JO  - Izvestiya. Mathematics 
PY  - 2005
SP  - 1113
EP  - 1135
VL  - 69
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_2005_69_6_a2/
LA  - en
ID  - IM2_2005_69_6_a2
ER  -