TY  - JOUR
AU  - V. V. Tkachuk
TI  - On a cardinal invariant resembling the Souslin number
JO  - Colloquium Mathematicum
PY  - 1987
SP  - 377
EP  - 385
VL  - 55
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/cm-55-2-377-385/
DO  - 10.4064/cm-55-2-377-385
LA  - en
ID  - 10_4064_cm_55_2_377_385
ER  -