TY  - JOUR
AU  - Švejdar, Vítězslav
TI  - A sentence that is difficult to interpret
JO  - Commentationes Mathematicae Universitatis Carolinae
PY  - 1981
SP  - 661
EP  - 666
VL  - 22
IS  - 4
UR  - http://geodesic.mathdoc.fr/item/CMUC_1981_22_4_a2/
LA  - en
ID  - CMUC_1981_22_4_a2
ER  -