TY  - JOUR
AU  - Ding Xie Ping
TI  - Weak conctrator 

 directions and weak directional constructions for a set valued operator with 

 a closed range
JO  - Novi Sad Journal of Mathematics
PY  - 1993
SP  - 39
EP  - 50
VL  - 23
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/NSJOM_1993_23_1a_3/
ID  - NSJOM_1993_23_1a_3
ER  -