@article{GDZPPN00126334X,
title = {On the two natural products in a Stone-Cech compactification .},
journal = {Semigroup forum},
volume = {48},
year = {1994},
pages = {255-257},
zbl = {0796.22003},
url = {http://dml.mathdoc.fr/item/GDZPPN00126334X}
}
Pym, J.; Strauss, D.; El-Mabhouh, A. On the two natural products in a Stone-Cech compactification .. Semigroup forum, Tome 48 (1994) pp. 255-257. http://gdmltest.u-ga.fr/item/GDZPPN00126334X/