@article{GDZPPN001258184, title = {On the closure of B1 [0,...)j.}, journal = {Semigroup forum}, volume = {33}, year = {1986}, pages = {269-272}, zbl = {0591.22002}, url = {http://dml.mathdoc.fr/item/GDZPPN001258184} }
Ahre, K.R. On the closure of B1 [0,...)j.. Semigroup forum, Tome 33 (1986) pp. 269-272. http://gdmltest.u-ga.fr/item/GDZPPN001258184/