TY  - JOUR
TI  - Summaries of articles published in this issue
JO  - Czechoslovak Mathematical Journal
PY  - 1971
VL  - 21
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1971.101053/
DO  - 10.21136/CMJ.1971.101053
LA  - en
ID  - 10_21136_CMJ_1971_101053
ER  -