TY  - JOUR
TI  - Summaries of articles published in this issue
JO  - Czechoslovak Mathematical Journal
PY  - 1981
VL  - 31
IS  - 1
PB  - mathdoc
UR  - https://geodesic-test.mathdoc.fr/articles/10.21136/CMJ.1981.101718/
DO  - 10.21136/CMJ.1981.101718
LA  - en
ID  - 10_21136_CMJ_1981_101718
ER  -