@article{700727,
title = {Sequential envelope and subspaces of the \v Cech-Stone compactification},
booktitle = {General Topology and its Relations to Modern Analysis and Algebra},
series = {GDML\_Books},
publisher = {Academia Publishing House of the Czechoslovak Academy of Sciences},
address = {Praha},
year = {1972},
pages = {123-126},
mrnumber = {MR0353260},
zbl = {0308.54018},
url = {http://dml.mathdoc.fr/item/700727}
}
Frič, R. Sequential envelope and subspaces of the Čech-Stone compactification, dans General Topology and its Relations to Modern Analysis and Algebra, GDML_Books, (1972), pp. 123-126. http://gdmltest.u-ga.fr/item/700727/