@article{GDZPPN001265512,
title = {On the closure of B2 ( ...,...).},
journal = {Semigroup forum},
volume = {54},
year = {1997},
pages = {166-174},
zbl = {0864.22001},
url = {http://dml.mathdoc.fr/item/GDZPPN001265512}
}
Korkmaz, R. On the closure of B2 ( ...,...).. Semigroup forum, Tome 54 (1997) pp. 166-174. http://gdmltest.u-ga.fr/item/GDZPPN001265512/