TY  - JOUR
AU  - Hájek, Petr
TI  - Automatic listing of important observational statements. I
JO  - Kybernetika
PY  - 1973
SP  - 187
EP  - 205
VL  - 9
IS  - 3
UR  - http://geodesic.mathdoc.fr/item/KYB_1973_9_3_a3/
LA  - en
ID  - KYB_1973_9_3_a3
ER  -