TY  - JOUR
AU  - Janusz J. Charatonik
TI  - Conditions Related to Selectibility
JO  - Mathematica balkanica
PY  - 1991
SP  - 359
VL  - 5
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MABA_1991_5_4_a7/
ID  - MABA_1991_5_4_a7
ER  -