TY  - JOUR
AU  - A. Kucia
AU  - A. Szymański
TI  - There are absolute ultrafilters on N which are not minimal
JO  - Colloquium Mathematicum
PY  - 1971
SP  - 29
EP  - 34
VL  - 37
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/cm-37-1-29-34/
DO  - 10.4064/cm-37-1-29-34
LA  - en
ID  - 10_4064_cm_37_1_29_34
ER  -