TY  - JOUR
TI  - Announcement. [Czechoslovak Mathematical Journal typeset in TeX]
JO  - Czechoslovak Mathematical Journal
PY  - 1991
VL  - 41
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1991.102508/
DO  - 10.21136/CMJ.1991.102508
LA  - en
ID  - 10_21136_CMJ_1991_102508
ER  -