TY  - JOUR
AU  - G. Isac
TI  - A Fixed Point Theorem. Application to Ershov's Optimization Problem (in French)
JO  - Mathematica balkanica
PY  - 1987
SP  - 33
VL  - 1
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MABA_1987_1_1_a3/
ID  - MABA_1987_1_1_a3
ER  -