@article{701200,
title = {On some problems in $\beta N$
},
booktitle = {Abstracta. 8th Winter School on Abstract Analysis},
series = {GDML\_Books},
publisher = {Czechoslovak Academy of Sciences},
address = {Praha},
year = {1980},
pages = {158-160},
url = {http://dml.mathdoc.fr/item/701200}
}
Souček, J. On some problems in $\beta N$
, dans Abstracta. 8th Winter School on Abstract Analysis, GDML_Books, (1980), pp. 158-160. http://gdmltest.u-ga.fr/item/701200/