@article{05662358,
title = {On (},
journal = {Bulletin of the Malaysian Mathematical Sciences Society. Second Series},
volume = {33},
year = {2010},
pages = {57-67},
zbl = {1188.03052},
language = {en},
url = {http://dml.mathdoc.fr/item/05662358}
}
Zhan, Jianming; Jun, Young Bae; Dudek, Wiesław A. On (. Bulletin of the Malaysian Mathematical Sciences Society. Second Series, Tome 33 (2010) pp. 57-67. http://gdmltest.u-ga.fr/item/05662358/