TY  - JOUR
AU  - S. Walczak
TI  - Optimality conditions for a Bolza problem governed by a hyperbolic system of Darboux-Goursat type
JO  - Annales Polonici Mathematici
PY  - 1991
SP  - 7
EP  - 14
VL  - 53
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/ap-53-1-7-14/
DO  - 10.4064/ap-53-1-7-14
LA  - en
ID  - 10_4064_ap_53_1_7_14
ER  -