TY  - JOUR
AU  - Zima, Václav
TI  - Special issue for the International Union of Radio Science
JO  - Kybernetika
PY  - 1990
SP  - 169
EP  - 170
VL  - 26
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/KYB_1990__26_3_a0/
LA  - en
ID  - KYB_1990__26_3_a0
ER  -