TY  - JOUR
AU  - Eric van Douwen
AU  - Teodor Przymusiński
TI  - First countable and countable spaces all compactifications of which contain βN
JO  - Fundamenta Mathematicae
PY  - 1979
SP  - 229
EP  - 234
VL  - 102
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/fm-102-3-229-234/
DO  - 10.4064/fm-102-3-229-234
LA  - en
ID  - 10_4064_fm_102_3_229_234
ER  -