TY  - JOUR
TI  - Zprávy
JO  - Applications of Mathematics
PY  - 1970
SP  - 71
EP  - 74
VL  - 15
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/AM.1970.103268/
DO  - 10.21136/AM.1970.103268
LA  - cz
ID  - 10_21136_AM_1970_103268
ER  -