TY  - JOUR
TI  - Zprávy
JO  - Applications of Mathematics
PY  - 1959
SP  - 470
EP  - 472
VL  - 04
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/AM.1959.102687/
DO  - 10.21136/AM.1959.102687
LA  - cz
ID  - 10_21136_AM_1959_102687
ER  -